There are a bunch of smaller indoor water park resorts in Wisconsin Dells. Because of their size, some of them could be ideal for families with younger children. The mega-parks can be crowded and overwhelming during busier times. And while they may lack the marquee attractions of the bigger parks, the more modest indoor water parks generally have the essential water park slides and diversions to keep visitors wet and having fun. Because its fees are generally lower, you might want to consider staying at a smaller indoor water park resort to save some money. Even if you stay off-property, you can purchase a day pass at some of the larger water parks, such as the Kalahari.