While I've been a hobby balloon twister for longer than I care to think about, I would like to branch out and do some steady
restaurant bookings, like 'Kids Nights' or somewhere that is kid friendly in Canada.  (I do not believe we have a Chucky Cheeze)

Any suggestions, guides, tips and what not about how best to prepare for doing this, and how to go about it?  Also, if I'd need
to have any form of liability insurance, before a restaurant would touch me?

Mister Shuffles

You will definitely need insurance, Christopher Lyle has a book out on restaurant work.
That might be a good place to start, it's not too big over here in the UK at the moment.
I do know a few who go out over here but it seems more the done thing in the US.

If you find him on facebook I'm sure he will point you in the right direction, it's a digital download so you get
nearly straight away.

http://www.lylemagic.com/