You can add an additional driver at the exit booth. Correct there is no charge for spouses as long as they have a license and credit card in their name and have the same address (don't laugh, we get the "this is my spouse" all the time with different addresses, so, I thought I would toss this info in.)
Another FYI, if you join Insiders, additional drivers are free. Alamo and National are owned by Enterprise, we share the cars. So, I would go with what is the least expensive.
What is Insiders and how do you join? How many additional drivers can you add? TIA


and my daughter loves the leather seats and siris radio. Perfect for getting the mobility 
