Mandalay Bay Beach

This expansive resort backyard checks just about every box: wave pool, sandy beach, lazy river, poolside casino. There’s even an adults-only top-optional enclave for those allergic to tan lines. And if you’re looking to rent some real estate for the afternoon, the Beach offers 100 different cabanas, daybeds and bungalows, where you can order in Jell-O shots, nachos or a spa treatment. After dark, the Beach plays host to outdoor concerts and other special events.