People from continental Europe seem to have problems with pub etiquette . I was in a near empty pub close to the ferry port on the Aran Islands one showery day a few years ago .All of a sudden a party of about thirty French hikers came in and took up all the seats and tables. After about ten minutes one of them got up ,went to the bar and ordered a mineral water and a packet of peanuts. That was it . About half an hour later ,when the rain had stopped ,they all got up and walked out again. I remember being surprised at how polite the pub staff were in not challenging the party. It often happened with continentals according to a local I was speaking to afterwards, "and the French are the very worst offenders".
It only occurred to me after a trip a to France a few years later that those poor French hikers might have been dying of thirst and politely waiting for somebody to come to the table to take their orders.
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There's nothing worse than holding the door open for someone coming behind you in a shop and them breezing past you without saying thanks. Or on your way out of a shop holding the door open for an old woman who's on her way in and the local football team walking in behind her,like you're the doorman. I suppose that happens everywhere though.