There is a Ferry boat from the TTC to the MK and back. Their are keel boats from the MK resorts (Poly, Contemporary, GF and WL to MK and back. Over at Epcot there are boats that make stops at the Boardwalk, one combined stop for both the Yacht Club and the Beach Club and also one stop for the combined Swan and Dolphin. They make a circle to Epcots international gateway, the above mentioned resorts and MGM. Hope this helps with your plan.