There is a free Alamo shuttle right outside the airport with frequent service. The rental office has both self-service kiosks and regular desks with a short wait time. The staff member who assisted me was very friendly. He suggested I upgrade the car because I had 4 large suitcases. Although I had reserved a full-size car like a Ford Fusion, he offered me the largest car in the same category, a Chevrolet. I checked if my luggage fit, and it did, saving me the upgrade cost ($40/day). He also recommended adding roadside assistance for $5 a day, which is helpful when you're traveling. He suggested prepaying for fuel since there are few gas stations around the rental location (some are under repair, some closed, and some far away). Taking his advice, I prepaid, but it turns out it's better to refuel on your own. While the price per gallon was similar, the estimate of the remaining fuel wasn't precise. However, factoring in the labor cost of refueling, I went with the prepay option.