I just got back from a weekend at the NickHotel. It was awesome, the pools are warm, the hot tubs are hot, but.....the slides and ALL that water that is poured on you while standing in line is NOT heated, and even though it was nice and warm outside, when the sun went behind the clouds (and at night), it was downright chilly. I would say the temp outside was about 88, so when the sun was out it felt good. It rained while we were standing in line for the slides, and I couldn't tell if it was raining or just the constant spray of water from the slides. We cut our evening(around 8:30) fun short because we got too cold.
I personally would think it silly to stay at this hotel, and leave to go to WDW or somewhere else. The prices are very expensive (I got off season
AAA discount for a one bedroom kidsuite for $180)., and it just doesn't make sense to just sleep there and swim a little. This hotel was a destination for us, and we never left the grounds. I am a value hotel/off season/ gimme a discount kind of person, so when I am paying $180/night, I am figuring the cost of a nice room and admission for four to a water park with added entertainment as my justification. It cost a lot, but we got a lot. And this is one of those save all year for it things.
The food at the buffet sucked, by the way, but I guess you have heard that already. I am not hard to please, when someone else is cooking I'll eat almost anything!! But this food at best was tasteless, at worst just plain yucky.. That is my only complaint. My kids (and DH and myself) had a ball. The staff was great, decor-great, entertainment-fun, loved it.