Does FL stand for Florida or Fort Lauderdale?
... The OP is not trying to ask about one specific city, rather which city in Florida has the easiest airport to cruise port connection.
Ft. Lauderdale is an easy pick. FLL is a stones-throw from the Port Everglades.
Tampa is a close 2nd... Taxis to the port are quite reasonable.
Whichever you pick, I suggest that you also check to see what the cruise line charges for an airport to cruise transfer. In Copenhagen, Royal Caribbean's transfer was competitive with taxis. If you are staying at a pre-cruise hotel, it will likely arrange a cruise port shuttle for a small fee, but if it only does airport shuttles, you could go back to the airport to pick up the cruise line's transfer.
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