Some wedding costs change with every guest. Others barely move.
Catering, beverages, favours and some rentals are usually guest-sensitive. Photography, entertainment and many venue charges may stay almost the same whether 150 or 170 people attend. Separating those two categories makes guest-count decisions much clearer.
Variable
Meals, drinks, place settings, favours and any other charge that is genuinely priced per person.
Step costs
Extra tables, servers, shuttles or rooms may change only after the guest count crosses a capacity threshold.
Fixed
Photography, DJ, ceremony fees and many design costs often remain similar within a reasonable attendance range.
Do not cut people only because a slider shows a number
The simulator is meant to reveal the financial effect of attendance, not decide who matters. Use it when comparing venue capacities, building an early budget range, or deciding whether a larger guest count forces other compromises.
