Disney's water parks are Typhoon Lagoon and Blizzard Beach, River Island is now closed.

My teenagers love Blizzard Beach, while they were younger we used to go to Typhoon Lagoon. Both are excellent water parks with fun rides. We have been to Wet'n'Wild when we had one of the 10 day attraction tickets between them, Universal and Sea World. To us it seemed like a concrete jungle. This may have been because we were there in the summer, it was very hot, and my eldest daughter and I both got prickly heat - which we have never got at the Disney parks.

You have to take adequate precautions for the high season, keep in the shade for some of the time, but it is a fun day, and in my opinion, worth every penny.