I have also taken pics of characters without being in line or in the picture. I think this CM either was just being not so friendly or maybe thought it was a rule; which I honestly don't think it is. I have also been with others who have done the same. We do not have children so sometimes we don't feel comfortable having our pictures taken or want to wait in the long lines. As long as no one is in the picture or you are not in anyone's way, why does it matter?