I did as the warnings said - looked straight ahead at all times, didn't close my eyes. I did try to glance over at a friend for a second and that was the only time I felt the spinning. I felt strange afterward, kind of disoriented for a couple hours. Not nauseated, just "spaced out". I left my bag on the ride, luckily a castmember found it before the next ride started. I'm not real fond of simulator rides to start with, I hated Back to the Future. I was OK through the launch, through the circle of the moon, but when it started weaving in and out on the landing on Mars, it started to get to me. I did MS once, that's probably it.