I'm sorry to hear that. That can be very annoying and I've had that experience before. Not for The Terminator but I caught the restored Gojira (subtitled with no Raymond Burr) at the theater about 10 years ago and two idiots were mocking it the whole time, laughing, saying things like "hadouken!" Okay that actually sounds kind of hilarious right now but it pissed me off at the time.
I had the opposite crowd experience for Terminator, no one was laughing because NO ONE was actually there. Literally there were three of us. A teenage girl, me, and then another dude in his 40's. All of us sitting separately. I was kind of shocked about the girl, I kept expecting a dude or other friends to come join her but nope, just us. There
were, however, three separate occasions where people came in, watched it for a few minutes, and then left. Two couples and a group of three guys. They seriously each lasted 3-4 minutes maybe. I can only assume that they saw "Terminator" lit up at the ticket counter and assumed they were buying tickets for Genisys. Once they saw young Arnold and the 80's future war visuals they were GONE. I couldn't believe it.
One screen, one showing in all of Tampa and three of us showed up? Lame...