Avis: 1000 Qantas FF miles for adding GPS to profile
Go to the link, fill in the form, and look out for 1000 miles in your account 4+ weeks later. You must be a member of Qantas FF and Avis. And ensure your Qantas FF details are in your Avis profile!
It will probably default GPS to your future bookings, but you can say no to it.