We have four holes that all start near our clubhouse and go in various directions, so any afternoon, and most mornings except weekends, you can wander up and go off in any direction, play 7, 5, 2 holes, whatever. Its accepted behavior if there are open slots between other groups. Same with jumping around, skipping holes, its pretty causal, just don't hold people up. Lots of people just show up, so you hook up and go off to play some holes, its great.
A bunch of people bring their dogs up to run and swim in the river with the Super's dog every morning at sunrise.
Superintendent has been there 41 years, he's an encyclopedia for the place.
All the staff are treated like family, a very good vibe.