When I was 17, I got the chicken pox, and just when I was at my worst , I had to perform for over 1000 kids during a Christmas Party. I had no contract, and by the powers that be I had to perform. With a bottle of my mother's Covergirl make-up , I did the show and after it was over, I think I must have slept for over 48 hours straight. It proved to me the value of having a written contract.
I immediately put in a sick clause. Later I
added things like:
Background music during the performance should be turned off.
Kids should be surpervised and remain seated during the performance. At present, I am revising and updating my contract form. What elements should I have in it with regard to refunds, cancellations, Public address systems, fellow performers if more than one performer is on the bill, liability- accidents that occur during an effect, etc.
Darryl the Wizard, trying to cover his a**!

You can look a little further in this section, a post called Contracts. There are a lot of ideas in this post

Cordially,