Did you consider any other choices? I know some would cover it and go back. I'm not implying you did anything "wrong," it's just interesting that people tend to react differently in this situation.
I would have politely requested a refund for the tickets and any snacks I had purchased and found an alternate entertainment activity.
First couple times going to the one at Washington Square Mall I put in the lock box but now I just ignore the "Be a defenseless target" signs and CC... Who is going to know right?