We went last year and it was very busy but the rapid river and the wave river were the kids fav because it allowed us to hand with each other. I just got back from the Galveston Bahn and it has tons of shade structure which was nice. The water coasters there was basically two of the same one. It has the two with round family rafts and a was just more comprehensive in slides comparex to KC.All slides had plenty of attendees manning them. KC has tons of room though and you see they are going for cheap incentives to expand. All I heard in Galveston was New Braunfels, New Braunfels, New Braunfels.
If Whitewater put in a wave river around the area they seem be expanding with the new Kau Pau ride(such a wasted opportunity) along with a nice water coaster and new slide complex with the newer style slides they'd be up there. Thing is White water had the rapids in a tube once and that's what shillerbahn seems to excel in