Among our planned stops on the Summer Tour are:

Great Wolf Lodge, Grand Mound, Wash. – http://www.greatwolf.com/grandmound/waterpark
Splash Montana, a city park in Missoula – http://www.missoulaparks.org/splash_montana.htm
Evans Plunge in Hot Springs, S.D. – http://www.evansplunge.com/
We also may visit Water World in Denver – http://www.waterworldcolorado.com/ – and possibly Oceans of Fun in Kansas City – http://www.worldsoffun.com/.
I think that Cynthia and I are more excited about the waterparks than are the kids.