Budget - Using Canadian vs. US BCD codes?

Checked the Budget offer on the Canadian Costco site today and found:
BCD # A017600 for Costco executive member rates

I have a Canadian Costco executive membership and have used their BCDs for Canadian rentals. But I will be renting in Phoenix in April and wonder if this code is acceptable there, or if I should use one of the US codes posted on this site?

Which made me think of the more general question-- do these codes work cross-border? Both Canadian codes in US and US in Canada?

What about other countries?

Sorry if this is a stupid newbie question!

I report in 10 days my luck with this code in Florida.

Do you have to show the membership card on picking up the car to take adavntage of the savings or it is suffecient to insert in the booking and the saving will be there ?

Do you have to show the membership card on picking up the car to take adavntage of the savings or it is suffecient to insert in the booking and the saving will be there ?

If you input the code when booking, the discounted price appears. Sometimes they say that you must present the card when picking up the car, but they have never asked me for one. YMMV

Do you have to show the membership card on picking up the car to take adavntage of the savings or it is suffecient to insert in the booking and the saving will be there ?