They do require a room as others have said. Great Wolf says they do this to manage park attendance. When we went it was pretty busy. You definitely had pesonal space but it's not the biggest water park. I imagine if they allowed day passes to the park it would be like the episode of the Simpsons where Martin crams every kid into his pool. Great episode.
You have to reserve a room
Reserve a room. Unless you know someonr else staying then you can get a day pass
Reserve a room unless you are an invited guest of a resort hotel guest and pay the guest fee.
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