Since you are not the member, the points are worthless to you. The member must make the reservation and must have enough points to make full night reservations. You really aren't purchasing points, you are purchasing a reservation from a member.
You will not be able to confirm the reservation or call Member Services for any reason. The member will be required to do all of that. The member can send you a copy of the confirmation sheet. Or you can call the resort directly a few days before you arrive to confirm the reservation (they transfer the reservation to the resort a few days ahead of time).