Costco.com had a great discount code to use for car rental, but to order it online with Costco.com you had to live in the U.S. I have used the corporate code and the coupon code it listed directly on the Alamo site instead and came up with great rates. Is this how others have used the Costco discount codes that are Canadians? I just want to be sure I have done this accurately. The codes were accepted for the reservation on Alamo. I am assuming you don't have to book via Costco.com site to use the discounts. Can anyone confirm that's done this? Thanks.