Jill,
I am not completely clear of the purpose of this art show. Is it to do something for the kids to encourage them to learn more about the arts or is it to promote your shop to the parents or both?
I have done a couple of kid's art shows and I always geared it to the kids. Hanging their art projects in your gallery will automatically bring in their parents. You could probably get some free ads from the local paper since you are donating all the proceeds to the art dept. of the school.
I wouldn't get too carried away with the frills and fanciness of catering and formal attire and all that for a kid's show. Keep it casual and focus on the kids and their art attempts and let the show flow on that basis. The parents will be proud of their kids and they will understand that you have tried to do something good for the school and the art students.
As an aside, I met Wyland at an art show at one of his gallery locations in Destin a few years ago. I was dressed in shorts (as usual) and a pullover T-shirt and I walked into a group of people who obviously were trying to "one-up" each other! Suits, evening gowns, jewels, heels, all the trappings of an evening of formal entertainment.
I melted into one of the back rooms of the gallery and was looking through a print bin at some of Wyland's marine prints when this guy comes up to me dressed in bluejeans and a plaid shirt and we struck up a conversation. I noted how out of place I felt at this apparently formal showing and he confided in me that I should not let it bother me as I was not alone in my feelings.
As I headed toward the door about 10 minutes later, I overheard somebody complimenting Wyland on his style of painting and the beautiful "whaling walls" that he has done. I looked around and here is this guy in bluejeans waving goodbye to me!! He was the center of the show and was the only one there (besides me) that looked anything like a comfortable person!
Point is keep the show casual in light of the art focus and make the kids and their art the center of attention and you will do fine.
Framerguy