Outdoor Event Weather Contingency Planner

Help me create weather contingency plans for an outdoor event. Event type: [wedding/party/corporate], Location: [city and venue], Date: [when], Time: [hours], Expected attendance: [number], Current plan: [describe outdoor setup], Budget for backup: [amount], Venue backup options: [indoor space available/need to rent/tent possible], Vendor flexibility: [which vendors need notice], Guest notifications: [how to communicate changes], Non-negotiable elements: [what must happen regardless], Weather concerns: [rain/heat/cold/wind/all]. Create: Decision timeline and criteria, backup location options, vendor coordination checklist, guest communication plan, setup pivot procedures, and day-of weather monitoring protocol.