I would seem to me that a reference to the Aurora shooting would be the best response to their claims of "assuring safety".
...not only will I, my family and friends no longer do business with you,...
As a point of (hopefully) constructive criticism, this is a remark that I always discourage. No one believes that your entire circle of friends and family will boycott the theater. Saying so puts you firmly in the "blowhard we can ignore" category. Doesn't even matter if it's true for your particular cases or not, it's NOT true 99.99% of the time it's claimed and they know it.
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.