The staff did not try to sell us any insurance. They just asked how many people we had, and upon learning that we had a larger group, they recommended a bigger car. At first, I thought it was a sales tactic, but they showed us the car we initially booked—it really wasn't big enough for our luggage. We ended up paying extra to upgrade to a larger car. Not sure if there was a discount, but it was sufficient.

Additional insurance was added without asking me. I didn’t pay attention at the time and my English isn’t good.

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.

Overall good, but the confirmed car model was not available.

Reserved a mid-to-large SUV Jeep Grand Cherokee or similar, but only JEPP Compass and FORD EDGE (rental car introduction says similar level should be Explorer) were available. Downgraded without price reduction, lots of upselling, such as paying for upgrades, GPS, insurance, etc.