I see plenty of availability from October 6 to early december excluding thanksgvings. They're most likely all booked up, I'd expect a majority of marriott points holders wanting to blow their banks before the category 8 hits the chart, and nothing beats a last hurrah than blowing it on in the maldives over the holidays.
Christmas opened up for all properties about 2 weeks ago. I got booking confirmations at the W, Westin, and StR. Still trying to figure out which one we want to go to.