Excellent

Out of habit, I always remain cautious when traveling. I completely ignored the front desk guy's advice to add extra insurance when picking up the car. Later, I realized the rental didn't include insurance for damages caused to other vehicles or people. I got scared thinking about it, so I went back and added third-party liability insurance.

They have self-service rental machines, and the manual queue isn't long. There is a bit of upselling on insurance, but you can just decline.

There are plenty of shuttle buses, so there's almost no wait. However, the counter staff will still try to upsell some additional services. There's a wide selection of cars in the chosen category. Haven't tried the self-service yet.

Charged twice multiple times: Paid the full amount on the app when booking, then charged the full amount again by Alamo at the rental location in the US.