The Numbers You Forget to Add
A guest is someone who responded to an invitation. That definition, tidy as it sounds, excludes two entire categories of people who will nevertheless eat at your wedding: children too young to count as full meals, and suppliers on a working day.
Children first. Many caterers price a children's menu at a reduced rate and require the number separately — they are not folded into the adult headcount. If you have seventeen adult guests plus three children under twelve, you do not order seventeen meals and add three; you order seventeen adult and three children's, which may come from a different part of the kitchen on a different plate at a different time. Miss this and you either pay the adult rate for small portions of pasta, or you discover the shortfall at the point of service. The relevant question to ask your caterer is not "do you cater for children" but "what age bracket triggers the children's rate, and do I report that number separately?"
Suppliers are a neater version of the same problem. A photographer working a ten-hour day should eat. So should a second shooter, a videographer, a band with four members, a coordinator not employed by the venue. Most catering contracts have a supplier meals clause — a lower per-head rate, plated separately, served during the kitchen's natural downtime rather than mid-service. But the clause only fires if you have told the caterer how many suppliers need feeding. Count them at the same time you finalise the guest headcount: name every external supplier who will be on-site during a meal period, confirm with each one whether they expect to eat, and add that number to the sheet alongside the children's total.
The two most common errors follow directly from ignoring those two groups. First, couples report the adult guest count to the caterer and assume children and suppliers will be handled in the rounding. They will not be; rounding does not work that way. Second, couples who do remember supplier meals forget that the number changes if a second shooter is added late or a band substitutes a member. Supplier meals have the same moving-target quality as the guest list — they should be updated at the same revision cycle.
The corrected mental model is this: the number you give the caterer is not headcount. It is three numbers — adult guests, children, suppliers — each with its own meal specification, and each subject to independent revision. Written separately from the start, they stay legible. Collapsed into one figure, the error is invisible until a plate is missing.