それってバッサーの仕事。
Busser : A restaurant employee who clears away dirty dishes, sets tables, and serves as an assistant to a waiter or waitress.
インターンではなくタダ働き。
Internship : an internship consists of an exchange of services for experience between the student and an organization. Students can also use an internship to determine if they have an interest in a particular career, to create a network of contacts, or to gain school credit.