Jonathan, Jonathan, Jonathan... you haven't figured it out by now? Marriott doesn't want you to book any of those deals it talks about. They want you to book those full price rooms. Why should they do anything nice for the customer during these times of high profits and possibly slow down the flow of huge profits into their overflowing pockets. They are on course for 3/4 of a billion dollars profit for this year, please don’t bring up the archaic concept of helping the customer.
FWIW, I too have signed up for those emails ebreaks, etc. and have NEVER received 1 of them. We are after all dealing with the Marriott IT department which can't even get their web pages rendered properly on IE7.