Well, if you were planning to attend a Force Awakens screening dressed up as your favorite Star Warrior, you might want to first check out your theater's policy on looking like a dork.
With costumery expected to be at a high for the film, AMC has, for example, put out a chain-wide notice specifically barring any sort of masks or fake laser guns from entering their screenings. "In short, bring your lightsaber, turn it off during the movie, and leave the blaster and Darth Vader mask at home," the company says.
Meanwhile, CBS Los Angeles reports that, at least at a local level, Cinemark theaters are taking even more stringent measures. A sign at one location's box office makes clear, "Star Wars costumes are welcome. However, no face coverings, face paint, or simulated weapons (including lightsabers/blasters) will be allowed in the building." Gun control in this country may still be a mess, but at last we have some sensible regulations governing made-up laser sword props.