Great list by Kara Kovalchik. Some of these seem so weird now, like:
3. DISH NIGHT
One gimmick that kept movie theaters operating during the very lean 1930s was Dish Night. Money was obviously very tight during the Great Depression, and families had to be extremely cautious when it came to any discretionary spending. A night out at the movies was an unnecessary luxury, and cinema audiences dwindled. Theater owners lowered their ticket prices as much as they could (sometimes as low as 10 cents for an evening feature), but what finally put bodies in seats was Dish Night.
In an age of home theaters and personal media, I do wonder what new tactics movie theaters can use to get people in the seats. Beyond the lame 3D gimmicks, of course.