The walk is very nice. I have never seen buses running to the Epcot resorts from DHS before. But, I'm usually out on the walkway.
The walk is easy to do....I've done it from Epcot to DHS in under 20 mins, but I was really moving!!! Usually it takes about 25 mins from to YC/BC from DHS.
When you get off the bus at DHS, head towards the canal, with DHS on your left, the parking lot on your right. Keep walking, on the sidewalk beside the parking lot. You will see a little slope going downhill, with a sign that says to Boardwalk. Take this, and you are then on the walkeway to the Epcot resorts. When you get to the end, with BW on your right, go left up the hill, and then an immediate right..towards YC/BC. There will be signage.