Enterprise has no intention of honoring reservations. The only reason Enterprise does reservations is to get the customer in the door. Enterprise's business model is to get the customer into the store where they have no choice but to rent whatever we have because in most cases the customer has little or no options.

Part of my job at Enterprise was to "phone shop" the competition. Meaning to see what the competition (Hertz, Avis, Advantage, etc) was charging for certain cars. What amazed me is when I asked for certain cars like SUVs, Minivans, or Full size sedans and they didn't have any or knew they wouldn't have one, they told me the truth and said they would be unable to make the reservation. Enterprise would never do anything like that. Enterprise books reservations knowing full well they won't be able to honor them.