Thanks for the reply. That was exactly what I hoped for as I'm trying to figure out where to eat on our Epcot day and was thinking about Beaches & Cream at BC.
No, there's no walking path from GF that goes all the way to the MK. I believe there's a path that goes partway, but it's interrupted by the waterway leading to the storage area for the Electrical Water Pageant barges. No way to get across unless you swim.