I took my kids to Six Flags and Cedar Point about 5 yrs' ago. I vowed never to take them to an amusement park until my youngest was able to ride the rides. My oldest didn't want anything to do with the rides.
We went to Disney World this year. I took my 9yr old on Space Mountain. This ride is awesome! It's pitch black inside and it's a roller coaster but you can only sit 4 people to a car. My son wouldn't talk after that.
The next day we went to Animal Kingdom and rode Expedition Everest! another awesome roller coaster. Me and my son went on this one too. I decided to record it with my camera. The video is awesome but my camera died after a minute. My son was crying when we got off but he got over it. Well we'll see if he's up to going to Six flags this year.