SPOILER BELOW, don't read if you don't want to know about the ride!!!
Armegeddon is more of an attraction then a show. It puts you into a live set which moves and can be scary. You all stand up in a small room designed to look like a space station. The space station is then hit by a meteorite and the station begins to blow up. Huge flames shoot up right next to you, and the floor collapses beneath you.
I certainly wouldn't recommend it if you were in your final trimester, it's certainly nothing like moteurs action where you are just a spectator sat down.