If you don't like to get wet, you'll have a hard time getting served here. The Belly Up Bar sits in the middle of a crystalline swimming pool inside Castaway Cove, Oceans of Fun's little adult oasis in a world of screaming kids. If you want a drink, you'll have to take the plunge, swim over and elbow your way through a throng of extremely thirsty half-naked people. But the margaritas are damn good.