Best site for getting last-minute confirmed DVC reservation?

Hi! I'm not in DVC (yet!), but I have a trip coming up this December that I need to unexpectedly figure out new accommodation for -- my current booking is off-site because we were attached to a friend's DVC reservation for perk purposes, but someone else has joined the party last-minute so now I need to stay onsite myself if I want early park entry.

I looked at the listings of confirmed reservations on several of the websites (David's, DVC Shop Rentals, DVC Rental Store), but there's nothing in my date range that's more than 1 night. Minimum dates I'm seeking are December 6th - 10th, but I can stay longer on either end if that helps.

Is it too late to book using DVC points? If not, what's the best place to put a request in -- is there a particular website that specializes in getting confirmed reservations on request? As a non-DVC-member, is it possible to see what's still available?