As far as kids go, we have a 6 and 9 yr old. The 6 yr old loves it, now that he is tall enough. The 9 yr old was hesitant, so we would stand next to the splashdown area while her dad and brother went on. Great on a 90* day to cool off. Recently, she has decided to try it, and she likes it. the drop's a little steeper than she is comfortable with, so she prefers Splash Mt. but at least she will ride Atlantis with us.
(now we just have to wait for her to be tall enough for Kraken! she recently discovered that she liked CyberSpace Mountain at DisneyQuest, and wants to go upside down)