I think AStitchInTime worded it quite well. Our guild had a small problem a few years ago with an 8 and 10 year old. I never found them disruptive, but some of our members did. After come pretty heated discussions, our ByLaws were revised to include "Membership shall be open to any individual age 12 and over who has an interest in quilts." We then followed it up with a Policy that says, "No children under age twelve (12) are permitted at Guild meetings. The Guild appreciates your leaving children and babies at home."
Not that I agree with it, but that is what my guild did.