2 options…

1. Call Marriott Rewards and send them a copy of the hotel receipt and the reservation showing the rate rules and they can manually adjust the posting (a nice rep may call the property and handle it for you so you don't have to email/fax anything)

2. Call the property and tell them that they need to post the points.

You might want to wait a few more days to see if they post on their own before going through the hassle of calling...