A recurring catering program lives or dies on one number: how many people are actually going to eat. Vendor rotation, menu variety, and delivery timing all matter, but none of it holds up if the headcount feeding your order is a guess. Programs that run on “about 40 people usually show up” tend to swing between embarrassing shortages and trays of untouched food heading to the trash. A deliberate RSVP process fixes both problems at once, and it does not require new software or a full-time coordinator to run.
Start with headcount, not the menu
The instinct on a recurring program is to lock in the menu first and worry about quantities later. That order of operations is backwards. Before any conversation with a vendor about what is being served, the office manager running the program needs a confirmed number of people eating. Once that number is set, portion sizing and order quantities follow from it directly — guessing at both the menu and the headcount at the same time is how programs end up over-ordering out of caution.
Default opt-in, not opt-in from scratch
For a program that repeats every week or every other week, asking employees to actively RSVP "yes" each time produces weak response rates and a headcount built on whoever remembered to answer. The more reliable pattern is a default opt-in: everyone on the standing list is assumed to be eating unless they opt out by a set deadline. This flips the administrative burden from "get people to respond" to "catch the handful of people who can’t make it," which is a much smaller and more manageable task. Pairing the opt-out list with the team’s existing leave or PTO calendar closes most of the remaining gap automatically, since people already on vacation don’t need to separately tell anyone they won’t be at lunch.
Pick one system and set a real deadline
Most recurring programs end up choosing among a few tools, and the right one depends on program size:
- A shared spreadsheet or Google Form works well for a single office or a program under roughly 50 people, and keeps every response in one place instead of scattered across chat threads.
- A Slack or Teams poll is fast to set up but is genuinely useful only as a reminder nudge, not as the system of record — responses in chat get missed, buried, or double-counted when people react instead of replying.
- A dedicated RSVP or event platform earns its keep once a program spans multiple teams or locations, since it gives a live dashboard of confirmed, declined, and pending counts and exports a clean attendee list straight to whoever is placing the order.
Whichever system is chosen, the deadline matters more than the tool. A cutoff roughly 48 hours before the meal gives the office manager enough runway to finalize numbers with the caterer, chase down stragglers, and still hit most vendors’ own order-change windows without triggering late fees.
Build in a buffer, not a guess
Even with a clean RSVP process, actual attendance on a recurring program typically lands somewhere around three-quarters to just over four-fifths of the people who said yes — meetings run long, people work from home unexpectedly, or someone just isn’t hungry that day. Rather than padding the order by feel, the more disciplined approach is to take the confirmed RSVP count as the baseline and add a small, consistent buffer on top of it, generally in the 10-15% range. Some caterers will build a modest variance allowance directly into a standing contract, which is worth asking about if the program runs weekly. The buffer should be a fixed, tracked percentage applied to a real number — not a round-up applied to an unconfirmed guess at the start of the process, which is how most over-ordering happens in practice.
Track no-shows to tighten the number over time
An RSVP process is not a one-time setup; it should get more accurate every cycle. Keeping a running log of confirmed-versus-actual attendance for each order lets whoever manages the program see whether a particular day of the week, a specific team, or a certain meal format consistently over- or under-performs its RSVPs. That pattern is far more useful for adjusting the buffer than a single bad week, and it is the kind of small operational habit that separates a recurring catering program that runs smoothly for years from one that gets re-evaluated every time a tray goes untouched.
Conclusion
Getting headcount right on a recurring catering program is less about finding a fancier RSVP tool and more about sequencing: confirm attendance before locking the menu, default people in rather than asking them to opt in, set a real deadline, and apply a tracked buffer instead of a padded guess. Programs that run this way rarely swing between waste and shortages — they converge on a number that gets more reliable every cycle, which is exactly what a program meant to repeat indefinitely needs.