I have a tall daring daughter who just turned 6.She road test track at age three and tower of terror at age 4. She road Expedition Everest last year at age five. The first two times she road Everest were pretty intense for her. But after ride number three she was begging us to go again. She LOVES Space Mountain. Her biggest disappointment on our last trip was that she was too short to ride Rockin' Roller Coaster and Primeval Whirl. She was not the slightest bit afraid of Soarin'. We will be on all of the coasters in just a couple of weeks. The only thing she really would rather not do again is the Dinasaur ride at Animal Kingdom. It really is all very dependent on your own child and just how much adventure she can handle. We are hoping to take my daughter parasailing over Seven Seas Lagoon this trip. It's just a matter of how to fit it into the schedule. I would suggest you start with the low key Splash Mountain, Big Thunder Mountain Railroad, Test Track, and Soarin'. See how those are tolerated and then perhaps advance to the faster coasters. I thought my daughter would have an issue with Space Mountain being all in the dark so we held off on it even though she had previously met the height requirement. Boy was I wrong! She thought it was fabulous on our last trip. She has also been on Mission Space. She rode it a couple of times but did not seem to be quite as impressed as with the other rides.