Jeni,
Congrats on making some sales, but I'm so sorry to hear about the accounting headache! I feel fortunate that the show I'm going to next month does not take a commission.
I agree that it's a good idea to bring jewelry to work on while at the show. I might consider that, but I'm always wanting to keep an eye on things to make sure people don't walk off with anything. I know that's what my helper is for, but last year she was so busy chatting that I don't think she was watching for shoplifters.
Anyhoo, I hope that you get invited back next year and that the organizers will re-think their accounting practices.