Why do you want to go there? It is going to be hard for the frum Jew sgetting kosher food finding a minyan and even learning Torah. Miami is a more Kosher place, although there too there is pritzus and crime in both places.
Besides Zaika and crime if you venture outside the tourist areas there are also hurricanes which will ruin your vacation this time of year. If you can wait until the first hurricane hits you can probably find a good deal.