We're a member of Club Sunterra, now Diamond Resorts, and it is a points based system. Our membership includes a membership in II. I looked today to see what I could exchange for, because there is nothing in our resorts, and it listed resorts and the points needed to exchange for them. If we book 59 days from check out then we can rent for 1/2 (50%) the number of points, both with our resorts and II. Our 59 days is the day after Christmas so I will be booking it then. We do have an exchange fee when we use II but it's only like $139.