Do not rent from these people unless you have absolute proof of any (and I mean any) minor scratch or dents on the car prior to driving it away.
Picked up a car in a dimly lit parking garage and failed to notice 2 scratches on the car. The attendant pulled out a ruler when I picked it up and said "anything bigger then this come back and see us, otherwise don't worry about it" Don't fall for it. I did not see the scratches until I had left and was able to see it in daylight.
Funny thing, upon my return, the attendant immediately went to that area of the car as if they knew what was they were looking for.
Did not say anything at the time and gave me my receipt. 3 weeks later, I get a letter from their claims department demanding payment for the damages.
Had insurance with my credit card company but beware.
My own fault for not checking better when I picked it up but still...
I have used Alamo/Enterprise at numerous airports before but this will be my last.