My cousin Jessie worked as a lifeguard at one of those hotels w/ an indoor water park this summer in Minocqua. So we got to go check it out (w/out having to pay the ridiculous fee they usually charge the general public)
It took a few tries but once he got the hang of it Alex loved the kiddie slide and pool and also loved jumping off the edge of the regular pool. Ben and I tried out the big people slides too!