Yes, December is definately a 1st priority booking. What are you trying to book--studio, 1bdrm, 2 bdrm? Why did you call rather than do it online as soon as it came up? I am sorry you are not able to get anything. I have seen some movement and cancellations 3-4 months out, so keep checking. For instance, I own BLT, and booked last year 2nd week of Dec with 11 month advantage. Later, maybe 4 months out, not right at 6 or 7 months, Poly and VWL opened up for 3rd week of Dec, and I changed to those, freeing up my BLT 2nd week Dec timeslot. Things do move, though maybe closer than you want to wait for. Good luck.
correction, that was Dec 2016, not Dec 2017.