We requested building 10, and got Building 6 (not preferred). We were no more than 5 minutes from the center of the resort (pool and food court). We lucked out that we were right at the center of the building near the ice machine. BOTH times we went, we did NOT get our requested building...I don't know if this has anything to do with doing on-line check-in, which we did. BOTH cases, the location of the room was great. (Though the first time we had book preferred.)
I agree with goofy4tink. Unless you are in a real outlyer of a building, everything is close.