I know, my kids have no problem swimming after a park day, no matter what the temp is.

I'd think your 2nd day drive will work, don't let the kids drink too much, less potty stops!

We made the mistake one year, heading down on a Friday evening and didn't make hotel reservations for some unknown reason, and we could not find a hotel anywhere in Kentucky. We ended up sleeping a few hours in a rest stop, and I got up and drove us thru the mountains just b4 Atlanta. I don't drive Atlanta.

DH took over.
We love roadtrips, and have not flown since our cruise in Jan 09. Kids love entering a new state, we sometimes stop to see things. Grabbed peaches in Georgia last trip.
Airfare for our family would be crazy. (5 of us driving down, my DD18 and her BF are flying on their own, no room for 7 of us in the car!)
LOVE Sarasota and Clearwater. If you end up in Sarasota and have time stop by
http://www.mote.org/. It is a bit pricey I believe, we have zoo memberships for Blank, so with the reciprocal program, we get in free to the aquarium.
Can't wait for Nov/Dec, so ready for a vaca to FL now!