I have a reservation for a week in April at the Hilton Grand Islander in Waikiki (2 bedroom). I made the reservation months ago and now airfare is prohibitively expensive for my family. I did quite a few searches here and it looks like I can't rent my week. Is that true? I don't want to just cancel the reservation as it's likely the points will just stack up. I'm checking here in case there's an option I haven't thought of. I believe I can gift the week to a family member but can't take money for it, right? Many thanks for the help.