Just got the crap scared out of me. I heard something in the lobby, and went out to see if someone was there, and there was an older woman there behind the concession stand with the lights off staring down at her phone so her face was lit up and it was like something out of a horror film.
She was like, "Someone kept calling me so I came out before it made more noise." And then just... hung out behind the counter on her phone. I did check a couple minutes later and she went back in after she saw me, but I was like... she was just... hanging out in the dark.