Just got back and I chickened out on Mission Space. Actually went through the entire line and was seated in the capsule when I bolted out the door (and my 15 YO daughter followed me). The ride warns that if you don't like spinning, enclosed spaces, or loud noises, then don't ride. I wasn't sure about the spinning part but thought I'd try it. Well, it was the enclosed space part that got me. You enter a small "capsule" with 4 seats across with screen/control panel across from you. Then you put the harness down over your head. At this point I put the harness down half way and almost had a panic attack. I slid out from it and got out. My daughter followed. My husband, at this point, had the harness down and locked. He said that after they close the doors, the screen/control panel comes closer to your face. (I know I would have had too much claustrophobia with that). He said he felt a little vertigo with the ride (and he never gets any problems with rides). He also said the G-force is amazing. His face was actually pulled back and he felt pressure on his chest.
Of course now my daughter is kicking herself that she didn't stay on and vows to do it next time. I will stay away from it.
All in all, my husband said it is a great ride and will have long lines when it is fully running.
Just a note, I have a small 7 YO girl (46") and she could have ridden. They had a measuring stick and she was definitely taller. I didn't even consider her going on it (she chickened out on ToT).
Cindy