It also depends on where your room is located. Some of the rooms closer to Epcot are a pretty long walk from the parking lot, but other rooms closer the lobby aren't too bad.
There are two self parking areas. When you are at the guard shack at the entrance, there is a self parking lot to the immediate right. If you keep driving straight towards the hotel, just before you cross the bridge over the canal, you can turn left into the second lot. The first few rows are the valet parking, and then there is more self parking. This self parking is very convenient for BCV guests, but if the only parking in the first lot is out by the street, you can sometimes get much closer in this second lot.
I always drive to WDW, so I'm particular about the parking. The absolute worst self parking is GF - it's actually across the street in an isolated wooded area. I not only worried about the car being left there, but I worried about my safety going to and from the lot.