I booked Dec 11-19 a couple of weeks ago. I got the following (all studios):
Dec 11 - 14: SSR (1st choice & 1st stay)
Dec 14 - 18: BCV (1st shoice & 1st stay)
Dec 18 - 19: SSR (2nd choice - waitlisted for BCV)
With all the stories we hear about difficulty booking in Dec I have had no problems 2 years in a row. Last year I got VWL for the nights I wanted, no waitlist, about 5 - 6 months out.