at your own risk...........
Accrued Points and Miles do not constitute property of the Member. Points accrued by a Rewards Program Member are for the Member's benefit only and may not be transferred to anyone except as provided below. Points are transferable to a legal spouse or domestic partner in the case of documented death of the Member. In addition, there is a limited exception for the transfer of Points into the Rewards Account of a legal spouse or domestic partner in order to qualify for a specific Reward. See “Earn Points – Transferring Points from One Account to Another.” Points are not transferable to another person for any other reason, including divorce or inheritance. Any Points which Marriott Rewards deems in its sole discretion to have been transferred in violation of Rewards Program Terms and Conditions may be confiscated.
In the case of fraud or abuse involving the Rewards Program, Point credit, Miles credit, Reward use, or a participating hotel, the Company and its travel partners have the right to take appropriate administrative and/or legal action, including but not limited to revocation/cancellation of any Reward and/or termination of Rewards Program Membership, and all Miles or Points and certificates (“Certificates”) earned through the Rewards Program may be forfeited and any relevant Membership Account(s) closed.
Originally Posted by
SkiAdcock
If you want to do it for sister or brother or parent, best to get their id/password before death (if possible) & then book awards or transfer points as though you're them.