call the resort and ask them - this is not a question someone here could answer.
now if you want a guess - then 75%?????
I have found
DVC members like early December - points are low, crowds are lows, and WDW (all of it) is beautiful
that is probably the harder time to get
Thanksgiving, most of October, May, are all getting harder to get.
kept in mind that DVC has the right (it is in your contract) to allow CRO (WDW) to rent any villa that are not filled at 60 days.
they are good at it - so most of the time DVC resorts are filled with either DVC members or renters. most of time 90 to 95% filled even in the off season -