i have gone frequently in march.
if i keep going back....there's probably a reason
weather is iffy, it can be warm or chilly, but rarely hot or cold,which is a plus and weather is always iffy on any trip. low rainfall totals in florida in march
it's not hurricane season- another plus
LATE march is not usually snow season (in most places)- so less chance of being cancelled or delayed from that
crowds are relatively low. more important to me than even the weather. unless it's easter week- but i think it is not this year.
i avoid spring break and easter week like the plague! you have to check calendar and stay away from these, but there's usually one or two weeks clear and then it's a great time to go.
highly recommend march, only time i like better is september- more rain but still good weather and the advantage of halloween party and international food and wine festival.