It's pretty cool. Everything is interactive. It's mainly virtual reality stuff-you can design and then ride your own roller coaster in a simulator that really flips upside down!
You can also do, my favorite, Pirates of the Carribean, which is when you go onto a "boat" surrounded by a big screen. Everyone playing has to run around to different "cannons" that are placed around the edges and shoot at passing boats.
There's a lot of other fun stuff there, but I can't think of it all now.
If you like video games, it's definatly worth it to go.