The Abbotts visit an abandoned grocery store in the film’s opening scene, careful to avoid bagged chips and similarly noisy foods. Crinkling plastic is a grave sin in this unfortunate future — the movie takes place in 2021 — but it isn’t so great in 2018, either. Because of how quiet the theater gets, you are likely to hear every crumple, munch or slurp in your vicinity. Just remember to open any loud packaging before “A Quiet Place” begins.