Next part is providing seating. And you can do it in so many ways, despite standard eating area. You can place blankets on the ground and pillows. Also, you can take out a mattress and create a comfy area. The choice is up to you.
No movie night without popcorn. Create a small snack bar for you and your guests. It will make the movie night so enjoyable. Serve snacks in jars and small containers.