Booking Help
Marriott MMP Rate Code: What to Enter and Where
Published June 23, 2026
Last updated June 23, 2026
8 min read
Primary topic: marriott mmp rate code
The Marriott MMP rate code is entered during hotel search, not at the final payment screen. The code tells Marriott's booking system to look for Explore Rate inventory for the signed-in account. If the account is linked and the hotel has availability, MMP pricing can appear in the results.
The code to enter
For the Marriott Explore Rate, the code most travelers search is MMP. Type it exactly into the special rate field during search. It is short, but it is easy to put it in the wrong place if you are moving quickly through the booking form.
MMP belongs in the corporate, promotional, SET, or special rate field depending on the Marriott interface you are using. It is not a coupon code applied after selecting a room, and it is not entered in the comments area of a reservation.
Where to find the field
On Marriott.com, start a destination search and expand the special rates or corporate/promo area before submitting the search. In the Bonvoy app, the field may be inside a rate or special rates menu. Labels can change, so look for the field that accepts corporate or promotional rate codes.
After entering MMP, run the search while signed in to the linked Bonvoy account. If you search while signed out, Marriott may not know the account is eligible. If your browser remembers a different Bonvoy profile, sign out and back in with the correct account number.
How to read the results
A successful search does not always label every result the same way. Some pages clearly show Explore Rate or MMP, while others display a discounted rate among available options after you open the hotel. Click into the property and room choices before concluding the rate is absent.
Compare the total price, not just the badge. Taxes, fees, and rate rules can change the final amount. If multiple room types are available, the lowest MMP room may sell out first while a higher room type still shows an Explore Rate.
Common mistakes
The most common mistakes are searching from the wrong Bonvoy account, entering MMP in the wrong field, searching multiple rooms immediately, choosing dates with no restricted inventory, or assuming every hotel participates every night. These are search problems, not necessarily setup failures.
Another mistake is comparing different searches. If you search MMP for two adults and compare it to a public rate for one adult, the results are not clean. Keep all search inputs consistent so the rate code is the only meaningful variable.
What to do if MMP does not work
Try a nearby hotel, a weekday stay, one room, and a shorter date range. If a five-night search fails, test each night individually. One closed night can prevent the full date range from showing the rate.
If every realistic search fails, confirm the Bonvoy number used for setup and the account currently signed in. Then contact support with the exact hotels, dates, and screenshots. Specific search evidence is much easier to diagnose than a general message saying the code is broken.
Quick answers
Is MMP case-sensitive?
Marriott fields usually handle uppercase rate codes cleanly. Enter MMP in uppercase to avoid mistakes.
Can I enter MMP after choosing a room?
You should enter MMP before searching so Marriott can return eligible Explore Rate inventory from the start.
Does the MMP code work without account linking?
Typing the code alone may not be enough. The signed-in Bonvoy account typically needs eligible access for the rate to appear.