The Dells is a great place for Theme Park/Coaster enthusiest like us. Big Chiefs roller coasters are just awesome. Zeus is still my favorite wooden I have been on. If you do go, make sure you ride Zeus at night. Make that the first thing on your list. It is such a great coaster. Cyclops is also very thrilling, but not as much as Zeus. Peaguses is just an average family wooden coaster. Big Chiefs Go Karts are awesome. If you like go karts, then that is the place to go.
Noah's Ark is an Ok water park. There is only one "scary" slide, which is my favorite, and that's the Plunge. You go on top of an 80 ft. hill (about) and you lay down on a mat, head first, and you take a small dip, and then you drop down the hill at a steep incline. The other rides are pretty good, I think it was worth the money I paid. But make sure you bring sandals, or else your feet will be no more...
The Dells has many other places with Go Karts, Minature Golf (which has a cool log flume ride), sky coasters, bungee jumps, and even a skyscraper. I would Highly suggest to go to the Dells.
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There is no such thing as a stupid question, just stupid people.