Not sure about other states, but a “no firearms” sign in Washington state will only get you an invitation to leave should you get “caught “ I’ve yet to hear of anyone getting frisked at the front door. Bottom line. Sign or no sign, I carry EVERYWHERE.
Wait until ISIS is turned loose on our streets and everyone will be carrying regardless of these stupid laws.
in some states the no gun sign has the weight of law behind it (LA is one such state i believe). HERE IN COMMIERADO IT DOES NOT. the sign is a request and not legally binding. OTOH if the store discovers you are armed and asks you to leave AND YOU DON'T than you can be charged with trespassing. there is no requirement for size or placement of kill zone here signs. i usually don't go into places that have them because i don't want to support them but, if necessary, i will ignore the sign.
i do not think the theater is responsible legally for having the sign and thus preventing folks from defending themselves anymore than they are guilty of not providing security.