Tropical flowers and the sound of running water add a jungle vibe to M-Bay's classy 135,000-sq-ft casino. Well-dressed sports fans and foodies pass through on their way to the upscale Sports Book section and several high-end restaurants, located just off the casino floor. Adjacent to Mandalay Bay Beach is the three-story Beachside Casino with an open-air eatery and a blackjack, craps and roulette gaming area overlooking the swimming pool complex. It's one of the few spots in Vegas where you can gamble in the glow of natural sunlight.