M.W.
I can't say about that one.
But every time we go to the Wisconsin Dells we stay at the Kalahari. It is the BEST! It's the largest indoor waterpark in the US. And they have an outdoor waterpark too! And they've added since we've been there last, a huge indoor theme park!
We have stayed at the Shula Vista once too. It was terrible! The waterpark was quite small. The water in the "kids pool area" was FREEZING. Our daughter turned blue after only a little while. I was shaking so bad because I was so cold too!
We've been to a few different water parks around here and none of them hold a candle to the KALAHARI! Check out their website. You can buy day passes but for what they cost, you're better off spending the night so they are included with your hotel stay.