I have a friend who assigns rooms. She said she assigns rooms 5-7 days before your arrival. She works on the hotel side not DVC, they may assign on a different time frame.
It makes no difference to your room assignment, as you can see above your room is assigned days ahead of time.
If you have a specific request, it never hurts to swing by the front desk before entering your room and ask if it was met. They can shuffle rooms on a limited basis with some approval after arrival.