It appears obvious that, like most subjects discussed on this forum, interpretation by individuals to any given situation is very subjective. I understand that.

What I don't understand is the belief that when you use facilities belonging to other individuals (or companies), the rules don't apply to you.

Regardless of whether you believe feet belong on sofas or not, if the CCR (or BA) ask you to not do it, then don't do it. Their lounge, their rules?