The rental agencies through Costco.com used to require codes but now you have to enter your American Costo number. It's a completely different system. The last time I booked through them using the codes was last May. I used to get the best rates through them.
I wonder if it's possible to buy an American membership. It would be totally worth it for Hawaii at Xmas. Something I should look into.
Good to know - that is why I suggested calling, but it sounds like you already have that info. That's too bad...I emailed them and called them, as it really is disappointing.
I don't think you can buy an American membership as you have to have a US address, I think?
Is there a US application form anywhere online that you can check?
Tiger