Originally Posted by
slowly
The 3rd night is usually removed at check-out (although I don't see it mentioned in the rate rules this time), so the total shown in the reservation details is incorrect.
Marriott seems to do this for a lot of their "pay for X nights, get y night(s) free".
I have a reservation for a pay for 3 nights get 1 free (St. Kitts Resort). The total in the reservation shows charges for all 4 nights. (Though the reservation does state that the 4th night will be adjusted at checkout.)