​Saturday night, 2:00 a.m. A club raftered with Colombians and Venezuelans, Argentines and Bolivians. There are Cubans too, primarily born in Florida. And there's also a smattering of Italians. Pepper the crowd with a fistful of Yanks and then stir.That's the stew. It could be La Paz; it could be Caracas; it could be Bogota before the wars or Buenos Aires under Peron. But it isn't. It's Doral, a six-year-old city that takes its name from its developers (Doris and Alfred Kaskel) and its cue fro