I love going to the Hamilton aquatic center with the kids. For a couple dollars, it's worth the craziness and keeps the kids cooled and happy. They could have better concessions or more options with real food, snacks and snow cones don't fill em up if they're there for several hours.
This center actually has good slides and dove boards, a mini float river without tubes, whirlpool and great kids area. Plenty of seating but only half if them have shade.