On the subject of stories, a few years ago I arranged for four of us to play an unaccompanied, reciprocal round at a top 100 (though not super-exclusive) club. Three of us went inside to check in, put on our shoes in the locker room, etc. After fifteen minutes or so, I went outside to check on our 4th. Turns out he's walked from the car to the clubhouse in his bare feet, and has been hanging out talking with the cart guys right in front of the clubhouse (the bag drop and cart staging area were right next to the clubhouse) in his bare feet, with his shoes in his hand. I personally couldn't care less about someone walking around barefoot, but lots of places and people do, and IMHO if you're a guest (either of a club or a member), you should always err on the side of over-formality when it comes to stuff like this.
Ultimately, I think the cart guys got a kick out of it and none of the members seemed to mind too much, so all was fine.