That's contractual unless you've bought cancellation cover. Liability policies don't respond to lost fees.
Inland marine covers AV gear, displays and merchandise in transit. Property coverage doesn't follow you.
Potentially, if a client acts on it and alleges loss. E&O responds, particularly for business and financial topics.
Yes. Books, slides and quoted material create defamation and copyright claims addressed by media liability.
To protect the venue and organizer from claims arising from your appearance. Additional insured status is standard.
