We have done it both ways, and realize that sometimes flying is not always a viable option. 2 years ago, we drove to WDW with our then 1 year old and 8 & 9 year olds. We live 15 minutes from the GWB and left in the morning! We knew in advance that we didn't want to drive through...so we chose a spot on the map that seemed like a good place to stop! We left at 9:00 AM, lunched in Alexandria, VA around 12:30-1:00PM, then continued on and stopped for a sit-down dinner somewhere in the southern part of North Carolina! Our overnight stop was at Santee, SC.(1 hour from the GA border). The next morning, the drive wasn't so bad and we weren't tired when we reached WDW because we had stopped. My advice is to stop and stretch whenever possible(especially for the toddler)!