It is only about 230 miles from Orlando to
Miami, but it seems longer. If you have a high tolerance for four hours of boring road, then do it. There is no sailing in Orlando to speak of, and February in Miami is a whole different world from Feblando.
I live in Orlando, and Orlando has a lot going for it, but not
boat shows. If you like
fishing, or sailing small boats on freshwater, then there is fun to be found within 50 miles, but if you have the need to window-shop on the
deck of a brand new
blue water cruiser, then you are in for a road trip.