To add the Marriott Bonvoy membership number for your upcoming stay at MGM Collection with Marriott Bonvoy destinations, you may:
Before Your Event:
1. Book through your dedicated MGM Resorts event website
a. If booking your upcoming group stay through the MGM Resorts Passkey website, you will be able to add your Marriott Bonvoy number during the booking flow.
b. If you already booked your stay via the MGM Resorts Passkey website, you may update your reservation in Passkey to add your Marriott Bonvoy number.
i. To ensure your Elite Night Credits appear in your reservation at Check-In, please add your Marriott Bonvoy number one week prior to arrival.
2. Reach out to your company
a. For rooming being managed by your company or housing bureau, please work directly with your contacts to ensure your Marriott Bonvoy number is captured in your room booking.
3. Call the MGM Resorts Contact Center
a. Call the MGM Resorts Contact Center at (888)529-4828 OR (702)730-7777 to add your Marriott Bonvoy number to the reservation prior to arrival.
Upon Arrival:
1. Check in at the Front Desk
a. Upon arrival, you may also add your Marriott Bonvoy number at the Front Desk during check-in.
Note, the MGM Resorts Passkey website only allows you to add your Marriott Bonvoy number OR your MGM Rewards number. If you added your MGM Rewards number during the Passkey booking flow, you can also add your Marriott Bonvoy number to your reservation by calling the Call Center numbers listed above or upon arrival at check-in. If you added your Marriott Bonvoy number during the Passkey booking flow, you can also add your MGM Rewards number to your reservation by calling the Call Center numbers listed above or upon arrival at check-in.