Florida RV parks

You won't be likely to find a single park on either coast for the rest of the winter, but you can find many that have openings for a couple of weeks or a month. Some poor souls still have to work and only have vacation time to travel.
You can also find longer term space if you're willing to go inland a bit from either coast, and its cheaper. Just avoid the Disney World area. My parents did it both ways over the years.