When my youngest was 3 she was tall enough for Splash, BTMR, and ToT. My other girls were 11 and 13. So they got her into riding thrill rides. She loved all of them. BUT (big but) it depends on the child. That trip we also rode PotC and she literally came off that ride stuttering. It lasted 2 years. She said the beach scene with the skeletons scared her. She's a huge PotC movie fan but still not crazy about the ride. Since the time she was 11 and older girls were in college or working I would sit in the "basement" while DD rode alone. For me I just can't do it again. It's everything I hate dark, heights, and closed in spaces.