Join Date: Aug 2000
Location: Edmonton, AB, Canada
Programs: AC 75K, Hertz President’s Circle, Accor Gold, Hilton Gold, Marriott Gold
Posts: 10,259
You need to use the Amex CDP to get the 4 hr grace. With the code you just enter a return 4 hrs after the full 24 rental period and you will only be charged for the one day.