Island Oasis Waterpark - Grand Island 

This is a hugely popular place on a hot summer day!  Lots of people all over.  I didn't take any photos inside the fence because everyone was so spread out.  You'll have to trust me when I say there were hundreds of people in here.  Many were just relaxing in the shade enjoying a cold drink and snacks, including pizza.  But lots more were in the water or just soaking up some sun all over the place.  The lazy river looked like a fun, relaxing water feature partly because it was shady in some areas.

They have a pair of really tall water slides.   I was hoping to see someone slide down while we were there but didn't catch anyone.