Originally Posted by
zhutch
Point of information, I booked a rental for the in-laws at LAX using Costco (A108326), and the agent questioned them and asked to see their Costco cards. After my mom-in-law told them that I booked it, he said he'd let it slide this one time.
He then proceeded to give them a really crappy Altima with lots of body damage and 37k miles...

Hmmm, I have USAA in my profile and now any time I go to create a new reservation, I must check a box saying I'm authorized to use the code and that its subject to verification. Perhaps this is a change across more popular codes.