I would suggest you first reach out to the resort and see what their policies are. As long as your maintenance is paid current just write up a contract that your are returning your unit, state the unit number weeks etc. get it notarized so there are no questions as to who owned the unit. Then mail that to the resort certified. Do not pay to return except make sure your maintenance is paid up. Even past maintenance even if you didn’t use it. That’s not their fault. If they come after you, I would not worry as the previous comment said