Cedar Point also has an indoor water park. It is outside of the park. Went there a couple of years ago. The water park itself was nice, but the hotel that is attached to it was, in my opinion, not the nicest. Of course for all I know, they may have made improvements to it. you know how customer oriented Cedar Point is. Also, do not forget the Kalahari, just down the road from the Great Wolf. After the latest addition, I read that it is now supposed to be one of the largest in the United States. Have not been there, but from all I hear, it is great. Been to Wisconsin, it was good, but it was cool and damp when we were there, so cannot judge too well.