We stayed in the Cabanas Bldg. 8B and it could not have been a better location, IMHO. We had a water view on the first floor. We were very close to the Dig site, just a 90 second walk. Right behind our bldg. was the parking lot for our rental. Walk time approx. 1 min. as was the bus stop. Walk to the food court, at a slow pace ( after all were on vacation ), no more than 5-6 min.
I always hear people say, "That CSR is large resort, and the walks can be long". That can be said of all the Moderate resorts.
It depends on your location within that resort. We have stayed at all the moderate resorts and if you don't do some planing a head of time.....Well, you could fine your self doing some additional walking. IE; first time we stayed at CBR we were in Aruba, now that's a hike to Port Royal! But we learned from that and requested a location next time that was better for us. My advise look at maps, and pick a location that's best for your trip.
Have a great time! I thing you'll be very happy with CSR.