I'n not too keen on this location either. Rented there last month - no upgrade at all. This month I tried to use a combination of paid and 1-2-free days and was unable to so so. System locked me out. I called corporate and was told that someone from the site would contact me in 24 hours - no one ever did. I ended up renting from a competitor for half what National would have charged for all-paid days!