Been useing Enterprise Car rental in the Chevy dealership,(Golden Motors) for years. Very dependable and freindly. However, reserve your car in advance on line, they are hard to get hold of on the phone, changeing reservation date due to crew change delay is easy online. Also, they close at 17:00 or so and have restricted hours on weekends.They have a key drop box so you can return car after hours.Airport and Fourchon/Galliano are in same area, so no fee for one way rentals, just don’t tell the online system that! Rental price is real reasonable.
Good Luck