We drive to WDW from Athens, GA - it's about 7 to 8 hours depending on who is driving and the conditions. We used to drive to West Palm Beach from Athens all the time to go diving, I think that was a 9 to 10 hour drive. Flying with scuba gear can be a pain. We have also driven down to the upper keys to go diving a number of times, that was maybe a 13 hour drive. Again, flying with scuba gear is a pain. That would be about my limit. We have to drive to Atlanta, which is the nearest airport of any size, that can be anywhere from 1:45 to 2 1/2 hours, depending on traffic. Then pay for long term parking. Have to be at the airport at least a hour in advance. The worst part is the looooooong drive home at the end of the trip when you are tired. It's cheaper to drive for us and not that much longer time wise for WDW.