Can someone provide some insight about the LNF rate:

How does it work?

If I go to marriott.com, and see that the rate per night is higher than that on say, a priceline.com, or similar website, can I call Marriott and get them to reduce the rate?

I called reservations and was told that rate matching is only for Marriott to Marriott rates...i.e., if the Marriott.com website is higher then what I would receive if I called the hotel.

Does Marriott "match" prices? Please advise. Thanks!

I am looking for:
11/11/2011 to 11/13/2011 at Marriott Napa Valley Hotel
Current rate: $349, looking for better