AMC Theatres wants to help you plan your next trip to the movies better. The company is officially warning customers to expect 25 to 30 minutes of previews and ads before the main feature begins. The new advisory appears during online ticket purchases, clearly stating that "movies commence 25-30 minutes after showtime." Some patrons welcome the clarity, appreciating the ability to skip lengthy ads and trailers by arriving later, reports Parade. AMC maintains that the added ad revenue will help keep ticket prices stable and support the company's long-term stability.