I know this is annoying, but there maybe a few reasons why. First, the talkers might be helping someone understand something or clarify what is said. We are not young and hearing can be a challenge during a movie. Also, if you where hearing aides, the sound of rattling milk duds, popcorn munching, talking is amplified. All of this is problematic. May I suggest asking the ticket booth for hearing impaired headset? These headsets block out all sound but the movie and it can adjust to a level to be heard by anyone. Problem solved.
