reasons. Very much enjoyed the water rides and being able to together as a family and everyone enjoyed them. Also liked the design of the park where it seemed there were rides for littles right next to the rides for the bigger kids, allowing the family to generally stay together. Also, who doesn't like a ride where they give you a candy bar at the end??!! Added Bonus - seemed like the trip cost half as much as Disney.
My young adults loved Cedar Point, Harry Potter World and Magic Mountain. I'm too old for that kinda thing now - can't do it anymore.
As a kid and young adult, me and my bros loved Marriott's Great America (I have four brothers).