I tested all my aperture priority auto expose capable cameras (Canon, Minolta, Nikon, Olympus, Pentax & Ricoh) and found only the LX to be capable of hours long auto exposure. Also, unlike the others - with the exception of the OM's, it constantly monitors the scene for changes in lighting and will adjust accordingly + or -.
Yep, set it up after it gets dark, put slow film in it, set the lens to f/22, and go to sleep. If you're a light sleeper the sound of the shutter closing will wake you at dawn.
I do use a digital device in my photographic pursuits when necessary.
When someone rags on me for using film, I use a middle digit, upraised.