I do not know much about the Marriott program, but in the Hilton Honors, I have received credit booking under the airline (hotel on a bump) & priceline/hotwire res. I have received stay credit if I charge something to the room (ie. local/800 phone call). Marriott may give you the stay credit as they will have to give you the points for the incidentials & may credit the room cost. On Entertainment/50% UA hotel cert , more likely to get credit than priceline/hotwire stays. Maybe the FTers who know more can comment. Sorry I do not know more about this.