Yes, that sounds right. Even last week there were dates over the Thanksgiving weekend that were booked at VWL and BWV, and that was before the 7 month window hit. I made sure to grab our VWL dates for the following week while I still had the home resort advantage. I was successful in booking the BCV at the 7 month windows for Nov 25 - Nov 29, but I called day by day.
For the future that is what I'd suggest. It looks like you waited until today to book the entire time (4th - 12th). You might have had more luck if you started calling each day starting on May 5th.
The first week of December is extremely popular with
DVC members. The weather is good, the points are low, and all the holiday festivities are in full swing.