We did! Our county rec system actually has 3 or 4 of them, and I bought my daughter a year rec system pass that includes admission to them all, so we will probably be going several times this summer (still have to pay my own $12 admission each time, though
) the pass also gets her into the indoor bounce house close to our end of town, which is why we got it in the first place, but he waterparks are a nice bonus
ETA: taken with my phone, which was in a ziplock Baggie at the time, hence the weird blurriness. The yellow slide is a body slide, the blue you go on with one or two person innertubes, then there's the big kiddie play structure, and behind that a lazy river and the flowrider surfing thing. This is definitely the biggest of the county waterparks. Too bad it's the furthest from my house!