Marriott International, Inc. is an American multinational company that operates, franchises, and licenses lodging including hotel, residential, and timeshare properties. Marriott is the largest hotel chain in the world by the number of available rooms. It has 30 brands with 7,642 properties containing 1,423,044 rooms in 131 countries and territories.
Use the app, and turn off all notifications (including emails) to the account owner.
Book your room using points or card
Make sure mobile key is selected after booking
Wait for your mobile key
Once you got it, enjoy your stay.
If the mobile key is denied, call in and add yourself to the booking using the name on whatever ID you use to check in.