Stayed in December at Luxor on an Mlife discounted rate (actually a rate code where I paid an extra $10 over the room only rate to get $30 daily food credit). I realized during my stay I hadn't asked about my WOH # so went to the front desk. One of the line roamers pulled me out of line when I told her what I needed and took me to a terminal they have hidden in front of the front desk, when she pulled me up I could actually see my WOH # was already in the reservation, so it must be auto-associated with my MLife #.