We just returned from the Valor (as you know) and we had side-by-side balconies. All you need to do is ask your room steward to unlock the balcony partition (sp?). There is a device on top of the partition to latch it to the side of the ship.
You mentioned before that you guys had the aft balconies. If those actually face aft instead of being on the port or starboard side of the ship I am not sure how the balconies are seperated. Someone else on these boards should know.