I'd say go to a carnival by your house first. It's summer and they're all over the place. See if she'll ride any of those rides, then that'll give you an idea of what she can and can't handle. I'm in the same boat as you. Last year DD didn't like anything that went up and down cause she didn't like that feeling in her stomach. This year though she rode all the rides and then some!
but his giant smile getting off told me he was fine.
he just doesn't understand. i just wish they were taller