This Hertz location is a complete toss up. They can be really good, or they can be a complete shit show.
Located a short walk across the baggage claim, all rental cars are located in the parking garage now. Thankfully the days of shuttling to the lot are long gone. Hertz is on the bottom level with their Gold counter right in the garage where you'd go to pickup a car.
Why is this location such a shit show now? If there happens to be any massive weather storms, people whose flights have been canceled will make one way rentals. For whatever reason, Hertz's inventory system will allow way more reservations than the number of cars that they have available.
There is nothing like being stranded at the airport with no car and being forced to wait util they open the next morning and wait for people to drop off their cars. Plus, the ratio of staff to customers is too low. For whatever reason, early in the morning or late at night, all people are routed to one line. If your Presidential Circle/Gold Card reservation isn't on the board, expect at least a 30+ minute wait, at the bare minimum.