Discount programs that allow extra driver (non spouse)

[katallo]

We have used Alamo with a free non spouse driver through Costco. Are there any other discounts similar to this. Many rental companies offer free spouse but we would be traveling with friends and we would like to add one of them. Thanks

 

[ilikecarrentals]

AAA (for other AAA members), AARP (no restrictions), USAA (spouses and USAA family members).

 

[katallo]

Thanks. I'll have to check to see if they belong to AAA