Likelihood of getting a car in Green Bay?
 

I am scheduled to pick up from Avis in Green Bay next week, booked through Costcotravel. Currently, all bookings for the dates I need are fully booked with no availability with any company. Any tips to insure that a car will be available for me. Picking up Monday am. Thanks.

There really isn't anything you can do other than showing up on time for your reservation (early is good as well). Keep in mind that the vast majority of folks have had no problems picking up rentals in the last few months other than having to wait on longer lines. We tend to hear only of the horror stories but these are a small minority.

Update, absolutely no problem, plenty of cars available.