Once when entering a hide, I sat right in the middle of a bench, with a great view, only to be looked at as if I had just sat on a White-Throated Robin while taking my seat. There was much mumbling and grumbling and before too long a large man appeared fully dressed for birding, or desert warfare one or the other, and he looked at me and stood there not knowing what to do.
I said to him
'you okay? seen anything good?' and he quietly replied
'you going to be there long?'. The penny suddenly dropped and I realised that this was his 'space' so being the good guy that I am I replied
'I'm here for the day'
The tension in the hide became palpable and I could feel the vibrations as the nails loosened from the wood as the hide started to break apart like
Mount Vesuvius was erupting nearby and I made my leave and smiled and said to everyone
'have a good day'.
That's only ever happened the once, but there is definitely a hide culture and a hierarchy too with the 'best' hides seemingly housing the same closed