The correct quantity starts with the event, not a universal tray equation.
Count confirmed people first
Separate yes, no, and maybe. Include vendors or guests who will be present during the meal, and note whether the lunch replaces a full meal.
Choose individual or shared service
Individual meals simplify portions and labels. Shared food gives people flexibility but needs serving space, utensils, and a thoughtful mix.
Build a small, informed buffer
Use the organizer’s attendance history, meeting length, and time of day. A buffer should cover uncertainty, not produce a second event.
Ask what happens after lunch
A short internal meeting, an all-day workshop, and a client presentation create different appetites and timing needs. Consider the schedule, whether people can return for seconds, and whether leftovers can be stored safely.
Measure success after the event
Record attendance, what ran out, what remained, and any dietary issue. The next order becomes easier because it starts with your team’s real history instead of a generic serving chart.
Let GG’s confirm the format
Send the date, address, head count, service preference, and dietary notes through the GG’s catering form. GG’s confirms menu and capacity before the order is booked.