Take a a taxi!! The only time our son had a "melt down" (and DH and I weren't far behind!) the entire trip was waiting in the sometimes overwhelming lines for a bus back to the resort at the end of the day/night. So twice we took a taxi back to our resort and it was amazing how it kept the Disney magic alive! (Ok, sounds corny, but true!) We did this twice-once from MK late at night and once after an afternoon of shopping at DTD. The fare to ASMovie (basically at the other end of WDW from MK) was only about $11, plus gratuity. This tip may sound trivial to some, but believe me-it kept the magic alive for us!