Since it would take only an hour or so out of your day, you could check out YC/BC, S/D, and BWI all in one loop after walking out of the International Gateway exit in the back of EPCOT. It is a nice easy walk to go around the lake, then you don't have to worry about parking, if you are already at EPCOT. Before we bought at BWV, we tried many times to park at the Boardwalk just to look around, and there weren't any parking spots.