Some friends would stay for days. Friends would just roll up at a time we agreed, too. If they didn't show, we wouldn't know why unless we called their house.
The time without cell phones on our person was magical. For kids especially.
I had a best friend that used to sleep over all the time and if he couldn't I slept over at his house. We went to the same school but lived two hours apart. Everyone thought we were a gay couple. Good times.
I used to sneak up to one friends house and quietly scratch the door. Their dogs at the time used to love it. If I tried now the new dogs would eat me, door & all.
I feel like I slept through the point where everyone decided to stop answering calls, answering doors and generally chose to turn to a life of hermitage. It would have been nice to get an email or something so I at least would have known.