As far as I know everyone here is correct about getting points when using a gift cert.
However, after my Nov. 3rd stay at Courtyard my points posted at 390. I paid an $89 room rate and used a $50 gift cert. Put the balance of $39 on my Marriott Visa. I have faxed MR CS about it and not heard a word. A small aggravation!
Then I looked today and it is posted as 500 points earned. So they just reversed it. A bigger aggravation! Come on Marriott, this is wasting my time.
11/3/01 11/4/01 CY SAN DIEGO DOWNTOWN TOTAL: 1,390
BASE EARNINGS 500
DOUBLE POINTS BONUS 890