I'm Hertz Gold and usually in too much of a rush to stop by the desk. Hertz takes the information when reservations are made. I give them BOTH my airline FF# and my Marriott #. What my statements always show is 250 miles (corporate rate) on my airline statement and 150 points for Marriott (assuming I stay at a Marriott on that trip). If I just give them my Marriott number, I'll get 650 Marriott points and no airline miles.