Heh, funny, I was there too. Yeah it was interesting. First thing I noticed waking in was that Horntail had on 3 trains, and Fireball was cycling empty. Also, the castle was muted. So then we get to the place where you choose, and there was a team member there blocking the path towards Fireball. On that side there were a lot of clothing racks with shirts. They were all generic looking shirts, no logos at all, so it must have been for a commercial. There was also a camera rig on the front row.
Since they weren't dueling them, Fire got dispatched before us, and while going up the lift, we could watch Fire (ah sorry, FIREBALL, whatevs lol) go through the track, and it's funny to see the entire train go with EVERYONE holding on and behaving haha. I know for commercials, the riders aren't allowed to lift their hands, so it was funny to see.