You'll be fine with your license. Obviously need a debit or credit card too at the desk for the payment. They're a very good company, but I would recommend not renting from the airport itself. Get an uber or taxi to one separate from the airport, you'll find that it works out cheaper. This isn't just Avis, but all of the rental companies. Enjoy your trip.
Hi Andrew, my partner and I were recently in LA (June 2019) and we rented a car through Avis. He only had to present his Australian driver license and a credit card. Great and fast service by the way, you get a car in less than 10mins. Hope this helps!
You should try calling Avis directly to get this question answered.
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