Strongly advised, and worth requiring. Their claims otherwise land on the market's policy.
Property or inland marine covers them, particularly in transit and while erected.
Usually general liability with the municipality named as additional insured, often at one million minimum.
Only with event cancellation cover. Liability policies don't respond to lost revenue from a rained-out market.
Potentially, as organizer. Product liability responds, and requiring vendor certificates is your first line of defense.
