They ended up providing a Nissan X-Trail instead of the Grand Cherokee, which was a lower category vehicle. The website didn't inform us about this in advance. Overall, the rental process was smooth and the car was pretty new, so I gave three stars.

There are self-service machines, so the process was pretty quick.

The car rental experience with Alamo was excellent!

Car rental services in the US are highly developed. We originally booked a 7-seater van online, but upon arriving at the Los Angeles branch, we found the trunk was a bit small. They allowed us to choose an 8-seater GMC with a bigger trunk and more space. They only charged us an additional insurance fee of around $150, and upgraded our vehicle for free. During the rental period, we had a few issues: a scratch, a flat tire, and a broken window from a thief. Each time, we called the rental company and they directed us to the nearest service point to replace the car for free, without any hassle. If this were in our home country, it would have been a much more troublesome experience. The service attitude was also excellent. Overall, this international car rental experience was very satisfactory.

Alamo and National share the same location, and the cars are interchangeable. At the self-service kiosk, you can print the contract in about 5 minutes, then take it and choose your car. We rented a luxury car and initially saw only a Volvo S80, which was nice but we were expecting something like a Cadillac. We asked the staff, and they kindly checked for us, eventually bringing out a freshly cleaned Infiniti QX60. It turned out to be perfect for long trips over the two weeks.