As Boardwalk is my home resort and I stay there often, we walk over to Fantasia - over the bridge to Swan/Dolphin and straight ahead past the pool and pond. Basically, from any park just take the Boardwalk bus - the Swan Dolphin bus will work too though it doesn't always stop/pick up in the same spot as the Disney resort busses. From any resort, just take transportation to DHS, and walk or boat over to Swan/Dolphn and walk. From Pop, take the skyliner to Epcot, walk over to Boardwalk all the way down the boardwalk to the bridge to Swan/Dolphin and walk - or grab the boat right by the Skyliner and take it to Swan/Dolphin.