My post is going to be a little different than it was going to be before I read all of these existing posts because some good points were made.
My personal opinion: I rode Dinosaur the first and only time in 2001 with my best friend, her husband and my adult son. It scared me SO badly I actually cried through 1/2 the ride and have not been on since. I have ridden Indiana Jones at Disneyland many times. Once I get past that snake leaning down at me (I always scream even though I know it's coming) I am fine. I love the Indy ride. But, Dinosaur terrified me but I did not find it terribly jerky, do not recall any big drops and would not think should cause motion sickness.
AFTER reading these posts: I agree that Dinosaur is very loud and I do not do well with loud noises; Dinosaur is very dark with things suddenly appearing right in front of you which I also do not handle well; and my friends got me in a front, outside seat which made it really bad for me personally.
I've never been able to get back on that ride HOWEVER after reading these posts I may attempt Dinosaur again if I can be assured I could sit on an "inside" seat.
I'd say give it a go at least once! If you get really frightened just close your eyes tightly until end of ride like I did. It wasn't bad once I closed my eyes, lol.
~Jerry & Nancy~
Sept. 3 - Sunrise WEDDING Vow Renewal then Drive to WDW
Sept. 4-16, 2011 - WDW HONEYMOON:
Sept 4-9 - Pop Century
Sept. 10-16 - Caribbean Beach