There always seems to be something amiss about your standard dayclub: too much VIP real estate, conservative DJs, unnervingly cloudy pools. These aren’t problems at the keepin’-it-classy Encore Beach Club, where you’ll actually want to dip into the water and—thanks to an enviable DJ roster—bump some booty in it, too. It’s where Diplo serves as your aquafit instructor. Encore, 702-770-7300. Thu, 10 p.m.-4 a.m.; Fri, 11 a.m.-7 p.m.; Sat, 10:30 a.m.-7 p.m.; Sun, 11 a.m.-7 p.m., cover varies.