How do I handle a very large order on WhatsApp?

Treat it like a catering order. Confirm the date, items, price and a deposit in one message, and only say yes once you are sure the kitchen can do it.

• Check stock, staff and kitchen time for that day before you reply.
• Send one summary message: date, time, items, quantities, total and delivery or pickup.
• Ask for a deposit or full payment up front, and say what happens if they cancel.
• Ask for the final headcount or quantity a day before, and say when changes close.
• Repeat the plan the day before so nothing is missed.