Car not ready at pickup

If it's not self-service pickup, the staff will try to sell insurance and have a bad attitude if you refuse to buy.

The self-service pickup is quite convenient.

Very good, highly recommended.

Queue times depend on how many people are there; if there aren't many Chinese, it won't be too slow. Service mainly depends on the renter's English proficiency; you can't expect everyone to speak Chinese. What kind of car you get is pure luck. I once booked a compact car but was able to take a small van after confirming with the staff, and there was no extra charge.