If you are at MK, you can take about a 5 minute walk to the Contemporary, then catch a bus from there.
If you are at Epcot near the International Gateway, you can take a bout a 10 minute walk to the Yacht Club, then catch a bus from there
From the Studios, you can take about a 10 minute walk to the Yacht Club, then catch a bus from there
From the Animal Kingdom, take a bus to Saratoga Springs and get off at the Congress Park stop and walk to DTD.