No. You dont want to play around with emergency and low fuel declarations. That can get you into a bad situation with the Feds and company that you dont want especially since its bingo fuel and you have an alternate and plenty of airports in Florida/Georgia to land at. Its pretty simple if FLL is taking arrivals you tell the pilot to divert to PBI and before landing at PBI see if FLL will take them in. Sometimes getting out of one constrained ATC facility and into another less constrained one can be a big difference in getting in.