I've been to Great Wolf and it is a lot of fun. The lines depend on when you go though. We got lucky and went in the winter when it was too warm for snow. The tail end of our stay brought in snow and the skiers came with it so the last day was mobbed. If it's not really busy I would say it is worth the money, but if you don't catch it on the right day it's not quite as much fun.
One kind of cool thing is that after hours (when the water park is closed) they have story time in the lobby for the kids and an arcade and snack bar. The kids all go in their pajamas to the story telling, and then to the arcade.
The adult only hot tub is nice, but I'd prefer it outside. I'm not much of a hot tub in a warm room person. Imo the only time a hot tub is nice is when it's cold outside of the tub. An outdoor hot tub in December is PERFECT!!! Even better if it's snowing! but I digress...
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W~
"The best way to make it through with hearts and wrists intact is to realize that two out of three ain't bad..." FOB