My two car rental experiences at Atlanta Airport over the span of three weeks were the worst I've had in many years. The first time with SIXT, they didn't accept credit cards without a chip, and it took several hours to sort everything out. This time with Advantage, it took almost 3 hours in total. We waited for two hours at the counter with a long queue and only two staff members who did nothing to speed things up. After finally finishing the paperwork, we went downstairs to pick up the car and waited another hour in the cold, windy weather at around 4-5 degrees Celsius. The staff were rude, and there were only two of them, one of whom was barely working. Some customers even canceled their reservations on the spot due to the staff's attitude and service quality. I couldn’t afford to do that after the previous credit card issue and the long wait, so I just endured it.