There are a couple of pools/hot tubs around where I live that are open 24/7 and people are always there drinking, listening to music, playing Vball and cooking out. I've stayed till the sun comes up a few times. Also, the lake is where it's at...
Camping (!!!), swimming, hiking, exploring water holes, laying in the sun, being lazy, cold alcoholic drinks on those hot days, campfires/smores...all of teh things with my best company. Woot woot.