There is a walkway around Crescent Lake. You can walk from the Swan to the Dolphin, Yacht Club, Beach Club, Epcot, Boardwalk and back to the Swan. Each of these resorts has an entrance facing this way (in addition to the entrance where you drive in ).
Yes,, it's right over the bridge - about a 3 minute walk.
The Swan, Dolphin, Boardwalk, Yacht Club and Beach Club are all around a small "lake" and you can walk to all of them on a very large walkway that goes around the lake and over to DHS and Epcot.
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