CRO has room inventory at
DVC resorts from various sources:
-- Disney Vacation Development (DVD) inventory that has not yet been declared into DVC inventory at any resort under development (currently only SSR)
-- Developer retained inventory (DVD does not sell 100% of capacity)
-- Inventory that represents the points that DVC members have used for most non-DVC usage, such as
Disney Cruise Line, Concierge Collection, Disney Collection, Adventurer Collection. (World Passport Collection is an exception because that inventory goes to Interval International.)
-- Inventory during the breakage period, that would otherwise be likely to go empty.
Then, there are the guests who are renting from DVC member through a private transaction. And there are the non-DVC members who have traded in through Interval International.
My guess is that around a third of the guests at DVC resorts at any time are not DVC members, but that's only a guess.