Thanks Maccaroneski - thats a great insight. While the personal claim/public liability issue may be a slight distraction here, its certainly interesting for all. Oops sorry to take it on the tagent again.
And yes I agree and support #23, but feel its of help to offer the advice on that proviso, as this is what I've encountered and experience all of my working life.
Would the same questioning be relevant if its the insurance company chasing you after they have settled a claim ? That was why I made the comment questioning the deep pockets (which I now understand your point). Again, if you own your house, and car, then you still have some ability to be taken to task. And perhaps its my previous friends experience (multiple cases), that makes me cautious.
On the walking into a studio point, and then getting to instantaneous grips with studio lighting, there are plenty of courses available, and some excellent tutorials around on the net; but until you try it in practice, its not the easiest of things to master in a potentially less than an hour's introduction (which is the max you would get when hiring a photo studio ).
However, a great suggestion would be to enquire (at the studio thats being hired for the event) about hiring an experienced photographic assistant - there are many around with the skills to assist a photographer, and would be the best choice, if the OP chose to take the chance.