Hello! This sunday is my child 8th birthday party. We are taking his few friends to a local zoo. Where most of the parents will drop off their kids. I will takebpack lunch for all. Now weather looks rain and shine. 70% precipitation of rain. Should I cancell it and arrange a indoor party? Or ask the parent to send them with welly and raincoat for zoo? Another option us postpobe till next week for zoo. Who know what weather will be next week!!Cant decide ..please help.