I agree with wldtrvlr...and speaking as one who lives in the "cone of possibility", even if Frances doesn't hit, the weather is going to be lousy...
Emergency officials in S FL are planning to err on the side of caution, because you never know when a storm will make a last minute turn. The local news indicates they will likely order evacuation of everything east of US1 tomorrow. Since FLL airport is on the west side of US1, chances are pretty good that the airlines will stop bringing equipment into S. FL