We had a few notorious XXX theatres in my hometown. There was The Lyell, The Riviera, and the Monroe.
By the time I was old enough to drive myself to them, only the Monroe was left.
It was an old neighborhood movie palace.
It had the auditorium with lots of action inside,
There were private rooms, but you had to know someone to have a key to get in there (and I understand it was strictly straight action)
and there was an attached adult store with booths (but no glory holes).
On Friday nights the action was nonstop.
There were young, old, fat, fit, hairy, shaven, whatever you needed! Something for everyone!
Of course, the place was eventually shut down...
We will never see anything like that again1