30 minutes prior to the first film of the day. (Opera and events included). Doors close 20 minutes after the last film starts. This is the time it takes for a film to run through its trailerpack before the actual film starts
There was no visible posting of times that I could see. It's probably around 30 before the first movie plays and i would think they close around 30 minutes after the last movie starts. At least that's how it worked at Amc Theater when I worked for them.
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