After years of attending movie sneak previews, we’ve learned a lesson or two. While you might save money by catching a FREE screening, you should have plenty of patience, be flexible and not mind large crowds. For the most part, screenings are very orderly, with no shoving or pushing. (If so, security is usually standing guard to address any such issues.) Movie previews are designed to create buzz about a particular film, so the general public will get exicted and want to buy tickets.