Retirement was of course, entirely luxurious. And not in a "having 100 servants waiting to cater to my whims" sort of way. It was relaxing. Luna wasn't feeling the pressure of being royal, which was exactly how she liked it… a few years of ruling Equestria with her sister had been quite enough.

Celestia was idly looking over her sun glasses as they relaxed by the pool under the warm sun, but… none the less, she was just a little concerned when Luna mentioned her latest project.

"Luna, are you absolutely sure that this... project of yours won't backfire like the Tantabus did?" Celestia asked as she idly sipped on a lemonade, complete with the little umbrella and ice cubes. Celestia was still rather proud that she made the drink herself: after years of being royalty, doing anything herself felt like an accomplishment.

Luna huffed a bit at the question in annoyance. "Yes sister, as I told you a dozen times today, I made it very differently from the original. It's perfectly safe, I promise."

Celestia nodded, taking a long sip of lemonade.

"Still... until the mane six saved you, it was going to head into the real world... perhaps the night we could look at it together, just in case?" Celestia asked.

Luna sighed in exasperation. "It's going to be fine. Nothing is going to go wrong." She insisted.

"The alternative is I nag you about it every day for weeks," Celestia smirked, swishing around the ice cubes in her glass.

"...You know what, I'm sure we can look at it tonight after all," Luna said, conceding defeat. It wasn't like it would take long anyway... right?

After nightfall, when Celestia drifted off to sleep, she found herself with Luna in a swirling realm of mists.

“Well,” Celestia said, amused. “This seems like a good memorial.”

“That isn’t how it works,” Luna replied, with a tch. “It’s not meant to be some kind of big space where the statue is, the idea is that, when I dream, it’s there as a reminder. For the first dream of the night, anyway.”

She looked slightly evasive. “I think. I’m almost sure I got that right. But this isn’t actually a dream yet, so it’s not appeared yet. That’s how that works.”

“You think?” Celestia teased.

Luna nodded. “I think,” she agreed.

“Well, I can hardly argue with that,” Celestia replied. “So… this is certainly your department, not mine. How do we end up in a dream?”

“I can simply make one happen,” Luna answered. “But, since I don’t want to force it, I’ll just use a spell to prompt the dream that would normally happen…”

Her horn lit up…

...and the two retired royals were in a large, sumptuously appointed pleasure room, with tables and chairs made of slender metal and varnished wood, and with windows all along both walls that showed an amazing view of mountains below.

“Oh, very nice,” Celestia approved, picking up a wine glass in her magic and giving it a sniff. “Is this one of yours?”

“Nay,” Luna replied. “It’s simply the dream that one of us would have had naturally. I’m not sure if it’s yourself or me, though.”

The room rocked very slightly from side to side, and she stifled a smile. “Though this is a very nice zeppelin dream.”

Picking up her glass from the pair on the table, Luna had a drink of her own. “That is good,” she added. “Though I wonder if we should stick to rosewater after the first glass.”

“After the first glass?” Celestia replied. “I’d have thought we’d be on the lookout for your statue.”

“We should, but… dreams aren’t like normal places,” Luna pointed out. “If the point of the dream is that we’re travelling a very long way, it will seem like a very long way, but the time between the points of interest will be… diluted. So perhaps it will be that the statue is at the far end of the journey… I certainly can’t see it in this room.”

Celestia looked around, and conceded the point.

“That’s true,” she said. “As I’ve said, you’re the expert, Luna.”

A minute or so later, a pony with a dark coat came trotting up to them.

“Your orders, madames?” she asked.

“Rosewater, please,” Luna said.

“I think I’ll have lemonade,” Celestia selected.

“Of course,” the pony replied. “I’ll bring your refills shortly.”

As she trotted away, Celestia chuckled.

“The funny thing is, I don’t mind that on this kind of place,” she admitted. “Because everyone would be getting the waiter treatment. Even though we’re the only ponies there. Isn’t that odd?”

"I suppose when everyone is rich and important, nobody is," Luna said, the next few seconds and minutes drifting by as what in hazy dream logic was hours.

Luna blinked, realizing based on the pang in her bladder they'd probably drank way too many rose waters and lemonades in the hours that wooshed by.

"Erm, do you think there's a bathroom on this zeppelin?" Celestia asked as she felt a similar pressure in her bladder.

"Surely there is somewhere in this dream..." Luna muttered as she led them through the door the waiter had come through.

Unfortunately, dream logic was striking again: despite being well lit, the princesses were confounded by hallways and pathways that made no sense and all of the signs being blurry.

And there wasn't even anyone around to ask for help either…

"Are all dreams like this?" Celestia asked in confusion as they made it back to their cabin by mistake for the third time.

"Dreams can be... wishy washy on certain details. Like layouts that make any sense..." Luna sighed.

A moment later, there was a musical chime that echoed through the air.

“Attention please,” a voice announced. “Owing to difficulties, can all passengers report to the main lounge?”

“I wonder what that’s about?” Luna asked.

“You can’t tell me?” Celestia asked. “Should I point out that you’re the expert – again?”

“I’m sure you are the expert on ponies, but you can’t tell me every detail of what they’re all thinking,” Luna replied. “But if it’s in the dream it’s probably important, so we should go and see, I think.”

Celestia nodded. “You’re the expert,” she said. “So… lead on.”

“You’re assuming I know which way the lounge is,” Luna replied, wincing slightly.

Fortunately, their standard method of wandering around randomly worked within just a few minutes, and Celestia and Luna found their way back to the lounge.

The waitress from before was standing there with a pleasant customer-service smile, and had a rolling cupboard next to her.

“Good afternoon,” she said. “There are problems with the plumbing, and so we’ve made sure to provide a solution.”

“Yes, there are problems with the plumbing,” Celestia said. “It’s not there.”

“Exactly,” the waitress said, so matter-of-factly that Luna felt confused for a moment. “However, the comfort and convenience of our passengers is important, and we’ve provided a substitution.”

She opened the cupboard, and revealed a stack of… underwear?

“What are those?” Luna asked, lifting one out and inspecting it.

“They’re pull-ups, I think,” Celestia replied. “The kind of underwear a filly would wear.”

“Is this some kind of joke?” Luna asked.

Celestia sniggered.

“What?” Luna demanded.

“You’re the one telling off the dream manifestation!” Celestia replied. “What makes you think you’re going to get anything useful out of… her? It?”

Luna blushed.

“Well-” she began, then stopped. “I suppose-”

She stopped again. “This is a very strange dream, and I suppose it must be your idea, sister.”

“Why do you think that?” Celestia replied.

“You knew what these were,” Luna pointed out.

"Oh please, I knew what these were because I raised twilight and have been in daycares," Celestia said, rolling her eyes.

The waitress seemed completely unfazed by their bickering. "Please put these on or step out of the line. If you take up extra time in line I'll just keep making them thicker."

Celestia scoffed, then tilted her head. "Do we... actually have to worry about wet sheets if we do this? Or don't do this?"

Luna gulped, knowing this area of dream logic sometimes lead to... incidents.

"Erm, dreams can be strange about that... we could end up with wet bedsheets either way," Luna admitted. "But usually following warped dream logic is the safer bet."

"Your sheets won't be wet if you put these on so the line can keep moving," the waitress scolded.

"Nobody else is in line!" Luna protested, seeing the pull-ups were considerably thicker.

"It's just policy, ma'am," the waitress said, and Luna sighed.

"Let's just go along with it for now and see where it leads us," Luna said, putting on a blue pull-up with her cutie mark on the rear, while Celestia put on a white one with her cutie mark on it.

"We should have just put them on when we got in line..." Celestia blushed, the bulky pull-ups now forcing a bit of a waddle instead of being like thick underwear.

“Well, I’m… not sure how the dream is supposed to go at this point,” Luna admitted, with a frown. “Perhaps… we should check to see if we’re about to reach our destination?”

“Oh, yes, for that statue,” Celestia replied. “The whole reason we’re supposed to be here. I’d forgotten.”

She made a face. “I… hope we aren’t going to need to actually use these.”

“You can always replace them with new ones,” the attendant said.

Luna grumbled something, and waddled over to the window.

“Still no sign of anything,” she said, then frowned. “Except for a storm that we seem to be flying towards.”

“Is that a problem?” Celestia asked her. “Does that symbolize something?”

“Storms can be symbolic in dreams, but they don’t have to be,” Luna told her. “I will keep an eye on it.”

Time seemed to flow by, in that odd way it did in dreams, and possibly only moments later there was rain drumming against the windows as the zeppelin rocked back and forth in the wind. The sway made it harder still for both alicorns to move around, and the sound of the rain against the window created a continuous liquid sound.

Luna pushed her legs together, trying not to think about water and drinks, then staggered as the whole zeppelin swayed to the side.

She felt a sudden warmth – then, a moment later, they were back in the mists instead.

“...that was very embarrassing,” Celestia decided, eventually. “Why are we still wearing these?”

“I’m… not sure,” Luna admitted. “Maybe it was something to do with how we put them on in the dream… at least the need to, ah, use the bathroom has gone away.”

Luna didn’t say anything about whether she’d actually used the pull-up. She wasn’t sure herself, so she didn’t have to say anything about it, and it felt dry now.

“...we should probably try again,” she added.

“Really?” Celestia asked.

“What else are we going to do?” Luna replied. “That was one unfinished dream – I must have cast a spell to leave it, without realizing. So the statue should still show up in the next one, since we never ran into it in the first place. And it’s not morning yet.”

"So do we just cast another spell? Or just... wait?" Celestia asked.

"Well... the spell made things odd last time, so let's wander and wait a bit and see what we find," Luna said, leading the pair to crinkle around the fog in search for anything interesting.

Celestia frowned a bit... couldn't they take the pull-ups off?

Suddenly the fog parted, derailing that train of thought as they saw a big movie theatre looming in the fog, advertising on a big neon side a showing for...

"The Multiverse of Nightwear?" Luna said in confusion.

"I think you made the statue wrong, " Celestia giggled as they entered, snagging popcorn and drinks for both of them.

"I didn't put as much in the way of finishing touches on this one, perhaps I missed something?" Luna said with a slight blush as they took their seats. The ads began to roll, starting with a swirl of soda that swirled and sloshed around and around and around...

"Remember: the biggest fans have bigger butts, because they're padded to watch the movie without breaks. Get yours today!" the first ad said, all about different pull-ups. As was the next one. And the next one.

Luna and Celestia started to nod along... it made sense for movies, right?

And then the movie proper began to play, somehow fuzzy and out of focus as they only seemed to be able to focus on bits at a time...

Nightwear's Soothing Diapers

These thick, puffy diapers have Nightwear Moon's symbol on them. They automatically soak up and power up based on any feelings of affection or other positive thoughts towards them or towards Nightwear, producing a subtle but powerful mental influence which gets stronger with even a stray thought. They are especially amplified by actions of submission or surrender towards the diapers themselves, such as wetting – they clean themselves quickly, but the impact on the wearer is much more lasting than that.

As they grow more powerful, becoming stronger and thicker, the diapers may also start suiting up their victims. If the suit is of a particular character, their power-up and mental influence also includes taking on personality traits of that character. …

Then that section abruptly shifted, and shorter parts came up instead.

"Nightwear has many forms and iterations. Sometimes she just wraps you in a cuddly subby hug."

"Nightwear is usually the best friend of cute princesses..."

And so on…

The movie blurred in and out of focus, talking about Nightwear… about how corrupting she could be… how insidious… and both Celestia and Luna nodded slightly as they stared into the swirling effect that seemed to be ever-present on top of the screen.

There were… flashes of unimportant information and images that were just there to explain more about Nightwear, which flashed on the screen in between more of those swirly art patterns.

Neither of the princesses was sure of most of the details of what they were seeing, but then again, it was a documentary. They didn’t have to understand all of it, so long as they learned some of the things it was trying to tell them.

They didn’t have to know what it meant when the black alicorn shook her rump at them for several minutes a moment, so long as they absorbed what the documentary was trying to say when it explained that Nightwear was someone who knew a lot about Nights and Wearing things and so you should always consider carefully what she said.

It went on, and on, and Luna and Celestia lost track of time…

...then Celestia blinked, squirming slightly in her seat, and felt oddly wet and squishy.

For a moment, she thought the screen was pulsing with the words RELAX and WET and OBEY, but when she looked up they weren’t there and she decided she must have been imagining it.

At least she’d been wearing pull-ups, so it hadn’t really been an accident… and now the screen was just showing a black shape, with a coat patterned with stars, and wearing regalia that all-told made it obvious that this was where Luna’s memorial had been in the dream.

“You did a good job, Luna,” she said, and Luna jolted slightly.

There was a faint squish sound as she did, and Luna blushed before looking up at the screen.

“Oh!” she said. “Yes, that is… I did. Good!”

"That's right! You both did good!" the statue praised, the two princesses feeling strange and fuzzy for a few moments as they began to stir, the dream fading away as they woke up again...

Luna yawned as she woke up from her deep, restful sleep. She signed a bit at the warm, soggy squish between her legs… she really flooded that pull-up last night, and these were the thicker ones too. Well, handling dream magic sometimes had side effects. As did handling the strain of raising the sun... no doubt her sister's pull-up was as yellow as the sun like it was every morning.

With another yawn, she waddle-squished her way out of bed and to check on her sister, who was also waking up.

"Morning, Sis," Luna said, as she got a sippy cup of coffee – a convenient way to avoid spills. "We found the statue at least, but then we woke up. We're going to have to investigate again tomorrow."

"Oh that's alright, at least it didn't seem dangerous. But we should certainly make doubly extra sure it's not having any unknown effects on us," Celestia said, her pull-up sagging from her flank. "Now let's get changes done, we're both soaked, as normal."

"At least we can use the training potty when we're awake.. a shame being a royal means everyone else is better at potty training," Luna said with a sheepish blush as the duo waddled to the changing area to get into dry padding to enjoy the rest of the day in.

After all, they'd have lots to explore at night.

Author's Note

Nothing to see here, everything’s perfectly normal I’m sure...