Write the rain decision before looking at the forecast

A rain plan is a decision process with a deadline. If it is only a second room on a floor plan, the team still has to improvise who decides, who moves equipment and which guests need updated directions.

A practical sequence

1. Name the decision maker and the latest time the venue can change setup.
2. Record which evidence informs the decision and who checks it.
3. List the equipment, staffing, access and photography changes for the alternative.
4. Prepare guest and vendor notices before the decision is needed.

Work through an example

The indoor setup takes ninety minutes and guest arrival begins at 15:30. A decision at 15:15 is not operationally available even if everyone prefers to wait. The team chooses a latest decision time that preserves setup, inspection and a communication buffer.

Where judgement matters

Weather information changes and may not describe conditions at the exact venue. Follow the venue and supplier safety processes. The planning document should make responsibility clear, not substitute a generic weather threshold for qualified judgement.

Make it usable

Open the working tool and change the example to match your own event. Then adapt the structured template. Keep the original assumptions visible until the people responsible have confirmed them.

Work the decision

A practice case

An original fictional scenario. Numbers are illustrative inputs; this is not a customer result or a provider performance claim.

A fictional garden ceremony has an indoor alternative that takes 45 minutes to reset. Guests begin arriving at 15:15. The venue asks for a decision before reset begins, and the florist needs access during the same interval. The decision deadline comes from the work required, not from waiting until guests can see the weather.

Three decisions and why each matters

Decision	Why it matters
Ask the venue to define the usable alternative.	A room being indoors does not establish its capacity, accessibility or availability.
Name one decision owner and their backup.	A group message without authority can leave every supplier waiting.
Describe what changes for each role.	A different room can change entrances, power, seating, photographs and transport instructions.

Make one usable artifact

Create a decision card with trigger, decision time, authorized owner, fallback owner, venue confirmation and the exact handoff after the call.

Then test the difficult case

The decision owner is unreachable at the deadline. Use the agreed backup procedure and show how the revised location reaches guests without exposing private discussion.

Use the linked tool or structured template below to record the result. Confirm it against the actual people, agreements and permissions before using it for an event.