DVC is behind the process with cash reservations. It may be so that they don’t cancel too soon in case the green light is given to open...also, for the most part, the policy is the same if a member or DVC cancels,
If it is a rental, then the DVC owner will let DVC do it so not to be in breach of any contract that may be in place. But, as mentioned, it’s only done no more than a week out and never on the weekends.