Well, I remember in AMS a couple months ago a group of shirts thinking they could muscle me out of my snug corner position.

Deliberately encroaching in my space and limiting me to very little, I pulled my table to the side where it had been before and placed my glass delicately on it and put my noise cancelling headphones on. My space had vanished when I returned from the buffet counter. It had been an obvious attempt to try and get me to move on and I did then decide to spread out my things a little more. I don't care how boisterous they can be if I can't hear them. This kind of behaviour annoys me, so I can advocate 'spreading' sometimes.