First, look at the price of the flights. If the 11:00 flight is a lot cheaper than later flights, there's no way you can make it!
IMO, I wouldn't try it. FtL port to FtL airport, yes. Miami to FtL, no way
. Even if you get off the ship at the earliest
opportunity, remember you have to get to the airport, check in, and go through security (and who knows how long that
I wouldn't want to spend my cruise worrying about it.