We had a flight late this year and got picked up at our resort around 6pm. I thought it would be great to get a lot of stuff done, but we definitely won't be booking a late flight again. We had 10am reservations at Ohana, then did some monorail resort tours. We then went to the Boardwalk and walked around, and then did mini golfing at Fantasia Gardens. We were really stretching our time here, and ended up just going back to our resort and relaxing in the lobby for about an hour. I would recommend adding another day to your tickets, which other people mentioned should be fairly cheap. Then you could sleep in, go to a park for a bit, and then hit up Disney Springs later so you're not trying to kill 6 hours there.