When I was a kid my family and every other Jew north of the Mason-Dixon line vacationed on Collins Avenue. I have fond memories of The Fountainbleu, Jai-Alai, The Diplomat, The Marco Polo, Wolfies, et al. But nobody called it South Beach back then. Was this term invented by some mayor or rapper (I'm thinking Vanilla Ice) to make it sound more appealing to non-Jewish tourists and when was the phrase coined?