The man let himself increasingly replaced; especially in China. The waiter and chef both replaced by a robot. They can (fortunately for hums) far from everything and is seems like a good publicity stunt.
The ‘cook robot’ example can’t mix the ingredients and the ‘serving robot’ had still a human being by means of a button to be directed to the appropriate table. In addition, the guest must eat and drink afterwards it self to address.
In this movie from the BBC states that it saves a lot of personnel.