What is Avis in Denver like overall? I normally rent with Hertz because I am a Southwest Rapid Rewards member and they are offering 1.5 RR credits per rental instead of the normal .5 credits. I have never had a problem with Hertz customer service or their vehicles.

I'm also a Costco member and entered their AWD number as well as a coupon code and received a rate that was $20 lower total than Hertz before the coupon was applied. I noticed with Hertz, they automatically apply the coupon on their webpage and show it factored into the rate. With Avis, it doesn't that so I'm not sure if it will be taken. Also, is a 4 day, 4 hour rental considered a 5 day or weekly rental with Avis?

I definitely need no less than a full size car (going on a fly fishing trip with 3 other people) but don't want to automatically be upgraded to a 12mpg SUV or minivan. I hear this is happening a lot these days.