Do I have to tip the driver when I pick up at the Los Angeles hotel?

The United States is a tipping country. As long as you are served, you must tip. No matter whether it is restaurant service with parking taxi, the doorman who helps with luggage in the lobby of the hotel has to pay a small fee. In LA, the restaurant taxi usually gives 15% (if the service is particularly good, you are satisfied with it, 2%). It seems rude not to give the doorman 2 yuan.