Took my kids here on a family vacation from Vegas. Since we don't have a waterpark in Vegas (yet) thought it would be a good idea. We went during the week from about 10am to 6pm. It was pretty fun. The water playground in the middle for the younger ones was awesome. As well as the new "mini" rides that my 4 year old could go on. My kids had alot of fun. The adult rides were pretty good too...although kind of a long wait on some of them. It got a little busy in the middle of the day but didn't last too long. It was blazing hot but followed the advice of many and wore flip flops and watershoes to the park and just put them on our arms when we went down the slides. All in all it was a fun day. Food prices are high but that's to be expected from a park like this....you can leave but just splash out the extra $$ for the convenience of not having to leave.
Pros - Great place for kids. Go on and off peak day and you'll be able to ride the slides no prob. Don't go in the middle of summer, on a holiday weekend and then get pissed why its so busy. Plenty of shade. Locker system is awesome...beats the old key thing
Cons - Admission price was kinda high...try and catch a deal or coupons. Did get a little busy but go early or later and you'll be fine. Not enough single person extreme rides. No huge tall slides =(
Overall, nice place, just don't be a retard and go at the peak times and get all grumpy about how busy it is.