I agree, you need to call. If you're looking for a standard studio, depending on your dates, it may not be available. I've been waitlisted since JUNE for a standard studio for 2 different dates and it still hasn't come through. Here are the dates I'm waitlisted for. Granted each of my waitlist are 5 nights, so if you're looking for a smaller stay, you may be lucky.
Jan. 18-22
Jan. 23-28
When I called in June (first day of the 7 month window) some days were available, but often too many holes in the middle of the stay. I did book OKW which was the same points as BWV standard studio, so if I get either, my point balance will stay the same.
When you call, you should have a backup resort in mind. You can certainly do like I did and book OKW and waitlist for BWV, esp. since the points were exactly the same.