The reason is that (1) the staff of large shopping malls and the staff of the fitness club upstairs will definitely send lunch boxes. ② Some members of fitness clubs will also order takeout through the club after the end of fitness.
In addition, your venue is small, so you must make it have a certain charm, but it should not be too expensive. You should work hard from three aspects: "precision", "cleverness" and "fullness".
Personal views are for reference only.