I have never rented a car before and I'm looking for some help. I'l be travelling with my Grandmother and wanted to use her AARP for the car rental discount. It offers a free additional driver and since I would be the ONLY one doing the driving (she's 83 and doesn't drive anymore) I wanted to see if there were any restrictions on who the additional driver is. Can it be for anyone? Since we don't live in the same house I want to make sure that it's ok for me to be the additional driver. Also, does AARP cover the rental insurance? I tried finding these answers on line but everything was pretty vague. Hope someone can help. Thank You.