Yeah, 2800 is the cabin loop nearest the Outpost and Fort check-in building so it is very walkable. 2800 and 2700 share an internal bus stop between them on the main road which is the last one on the Purple line before it gets to the Outpost. We recommend it to folks for the upcoming Marathon weekend who want to stay in a cabin but want a short, easy walk to the Outpost to catch a RunDisney bus to the EPCOT start line (that doesn't rely on internal transportation).
Bama Ed
PS - at check-in ask for a cabin near the loop entrance. That way you won't be at the far end of the loop and have that distance to walk as well as the distance from the loop entrance to the Outpost.