I guess the first thing to decide is which theme you want - Mansions or Alligator Bayou? We stayed in AB14 which is a preferred building and loved that it was less than a 1 minute walk to QS and bus stop as well as gift shop, etc. We also had a view of the Sasagulla River. While the theme is deep inside the bayous of old tin shacks, the room was recently renovated and typical of a Disney moderate. The mansions are anti-bellum South and look exactly like what you would find a Southern Plantation house to look like.
If you look on the resort map, you can see the locations of the buildings. The far end of Alligator Bayou is probably a 15 minute walk to QS, but has a bus stop near it. Depending on what Mansion you request, you might have a 5-10 minute walk across the bridge to QS, but you also have your own bus stop.
Tom