I typically rent from this location, as the hours are good (they are open at 7AM on Saturdays) and the staff are efficient, if not overly friendly.
Avis offers unlimited miles and while the prices are sometimes a bit more than Alamo (across the hall), the cars are usually newer/cleaner and the pick-up/drop-off transitions smoother.
I suggest signing up for Preferred Service (free), which will also significantly cut down on time at the rental facility.
During high traffic times, driving out of and into the garage can be a hassle.
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