I haven't stayed in 16 or 62, but I did stay in a GV in building 63 on one trip. It's a good location, close to the hospitality house. I don't know if you can request specific buildings when you make your reservation, though - most just request the area that they would prefer to stay in.
BTW, buildings 61,62, & 63 will most likely be given to those who list the need for an elevator because of medical needs. These are the only three at OKW with passenger elevators. If you were going to try for this area, I would probably request "Millers Road, near Hospitality House." With any luck, this may put you into or close to your buildings of choice.