Some of my earliest memories are from the drive-in. We'd go, kids in jammies, popcorn premade. If we were lucky, we'd get to buy a hot dog or some candy. Loved the sound of those speakers in the night air. "Planet of the Apes". "Herbie the Love Bug". Good memories.
When I was a teenager, the drive-in was just a hangout, and we had two to choose from right on the outskirts of town - one to the Northwest, and the other to the Southeast. We'd tell our folks we were going to the movies, and we just parked the cars, drank beer, and smoked pot. The cops patrolled up and down the rows, and didn't generally interfere unless somebody was out of control. Our biggest decision on a Friday or Saturday summer night was "10-HI, or Cloud"?