This seems strangely specific, but it is important. One of the most unbreakable rules of filmmaking is that you must provide a meal for your crew if they’re going to be with you for the day. They can work for free with no trouble, will drive themselves to location without a gas stipend, and many will work themselves to the bone to help you complete your vision. But if you want to avoid people walking off of your set, you must feed them. It doesn’t have to be anything more than a couple pizzas, but it is one of the most important unspoken rules of independent filmmaking. And now you know.