How Event Vendors Make Money

A vendor day has four numbers that matter.

Traffic. How many people walk past you, not how many attend.

Conversion. What share of them buy. A drink at a hot outdoor event converts far better than at an indoor craft fair.

Average ticket. One drink, or a drink plus an add-in.

Cost to be there. Vendor fee, product, labor, fuel, ice.

Revenue is traffic × conversion × average ticket. Profit is what's left after the cost of being there. Vendors who only watch revenue can work a huge day and still lose money on a big fee.