I was told that the points can be used for stays after July 1st and that is also when dues kick in as well. I don't know about the cash reservations part. I think they just pushed the opening date up which means that on March 6 you can call for July 1st or later to stay at the BCV on points. If they are taking cash reservations now for August, I would guess that they will now take them for July too since that is when it will be opening.