Star Tours is a ride I can no longer handle. I did it once during the preview of the reopening, and it reminded me why I don't ride it. It and Indy are 2 rides that are just not worth riding any more. Don't get me wrong, I like the ride, but the severe headaches after wreck the rest of the day for me.
Soarin' premiered in 2001 with a warning, but it was due to nausea for pregnant women. It was removed within a year or so, and does not have the warning now.
That said, it is very interesting to find on Soarin' what can cause nausea! My daughter, who rode Star Tours 8 times within 3 hours during the preview, rode Indy as a solo rider for 40 mins without having to get off during a special event (I didn't count, I waited outside after 1 ride) and rode Big Thunder 10 times straight when it was previewed without a hitch, tried to ride Soarin' 2 weeks post leg surgery as it was one of the few rides she thought she could handle, only to work hard not to throw up during the ride (and had to leave the park after.)