I love the business angle. Office work people are always looking for new places to get out in fresh air and eat good food. Be strategic about this. Drive your various service areas, or look at a map, and look for marketing opportunities. “If you are duck hunting, you gotta find out where the ducks are”. Identify potential high value targets for food drops and literature/flyer/menu drops. High concentrations of people who are likely to want nearby lunch opportunities. You may figure out that one or more locations are low value locations and need better strategic placement.
Another angle is Radio stations. If you show up in the middle of the morning show time slot with a couple pizzas and some hoagies telling the “gatekeeper” they are for the staff and on air guys . . . you got a good shot at getting free on-air mentions. It better be the best food you ever produced, and looking perfect. Give menus, and a single, well spaced information sheet the personality can read and pick key info off when on air. Locations, times, specialties.
Another place to hit is Public Safety houses nearby: fire stations, police precincts, and the like.
Take food with some literature/menues/flyers each place. Then follow it up three to seven days later with more literature.