I told you to go right

For a summer's night, it was bloody freezing. And, considering how sharp Twilight has been making the knife, I don't think I'll be going inside. Ever. So, settling in behind a few hay bales in the barn, I began to wonder where the others were. I swear everypony else was supposed to be sleeping in the barn... I mused. Where the hell are they?

"Hmmm." I murmured aloud. "I bet they're at Twilight's. I'll be sleeping here. Alone. Bollocks." Sighing, and admitting loneliness, I curled up and shivered for around 20 minutes, before I finally went to sleep.

Canterlot palace? Why?
The booming silence of everything was just eerie. The huge hallway seemed bigger than I'd thought, guards seemed even more imposing, and there seemed to be an infinite expanse of doors. Deciding my only option was to trot about, I simply began to move down the hallway. Just before I turned a corner, somepony tapped me on the shoulder.
"Aaah, it is good to see you." came a familiar voice. Turning, I was met by the gaze of Princess Luna. Her mane, ethereal as ever, flowed in the silence, mingling with the shadows as her eyes looked at me. "Thunder Mustang, was it?"
"Ummm, yes?" I replied cautiously. I took a few steps back.
"Thou art afraid?" she asked, smirking.
"Y-Yes. Quite a bit." I shakily nodded. "It's so eerie. Like, silent."
"Yes, the dreamscape tends to be like that." she sighed. "Thou wouldn't be the first to be terrified of us. Ever since we returned, ponies have been in fear of us."
"Not even gonna ask why."
"Art thou attempting humour? For it is failing."
"Yep, you too."
"As we wished to say, thank you."
"For bringing you back?"
"Yes, and for encouraging laughter in dark times. Come, let us walk."
"Alright." With that, we began to trot side by side down the halls, guards saluting Luna as she went past. As we went past a window, I saw the world outside. It was my mind; the moon looked half eaten as the Hyperion ship hovered in front, with Sanctuary flying just in the distant mountains. Down below the castle, pirates with guns fought Rakyat in the middle of a desert, Halo's marines driving around in warthogs whilst shooting down Covenant. In the distance, a Scarab fought Alduin, who was being ridden by Chuck Norris. Meanwhile, BNK-3R was diving and soaring about as it attacked a Star Destroyer. Darth Vader was so pissed that he then proceeded to throw slabs of meat at his attacker. I stopped to admire the sheer stupidity of it all. Luna trotted up next to me, looking quite bemused.
"Is this genuinely thy mind?" she asked, chuckling slightly. "Condolences."
"Not a problem. I'm in control of it all." I replied. "Watch, I could make that battle below explode."
"Go ahead, it is thine dream."
All of a sudden, a huge nuclear explosion filled the room with light as the battle below did, as I said it would, explode.
"Told you." I laughed.
"Mm-hmm." Luna nodded, looking quite worried as she cleared her throat. "Well, for the service thou hast done for us, we are inviting you to the Royal Gala. Wear thy finest clothes, and be sure to arrive on time."

"Well, thank you." I smiled. "I'll do my best to make it on time. SILVERFISH HOOF CATCH." I boomed. And, for seemingly no reason, a silverfish did fall from nowhere, and I did catch it in my hooves. Princess Luna simply facehoofed, before disappearing. "Well, g'bye. CATCH A RIIIIIIDE!" I yelled as a random truck materialized from mid-air, landing on a guard.

I awoke sweating. Maybe having 1,000,000 Super Badass Loaders take me on while I had acid piss that insta-kills wasn't the best idea. Rubbing a hoof to my forehead, I sat up. Suddenly, a flash of light. A scroll appeared in mid-air, before dropping onto my lap. It bore the Royal Seal, so I wasted no time in opening it.

Thunder Mustang
The tickets, as agreed.
Princess Luna

Just the second I read the letter, another flash appeared. This time, six gold tickets landed in my lap, each bearing a different name of my friends. I grinned.

"Oh, thank you, Lulu." I laughed, picking them up and standing up. All of my legs made a click as I stretched them out, before I gave my wings a few flaps. I couldn't help but go through checks in my head. Tickets=Check. Wings=Check. Sanity=Limited, but check. Brain Cells=All in perfect broken order. All ready to go! I went over to the barn door, pushed it open, and the glare of sunlight nearly blinded me. After allowing a few minutes for my eyes to adjust, I spread my wings and took off again.

When I opened the library doors, I wasn't surprised to see Inferno and Twilight with scraggled manes. Stifling a laugh, I looked about. The other four were just lounging about on chairs and tables. I decided to break the silence.
"Get some monocles, boys!" I yelled, pulling the six tickets out. "We're goin' to the Gala!"