People turn round and stare at you briefly.  One of the barmen comes out from behind the bar and walks towards you.  He looks quite annoyed.  The dog wanders off.  When he arrives at your table, what do you say to him?

"It's about time, what do I have to do to get served in this place?!

"I'm sorry, this is my first time in the UK, what do I have to do to get a drink?"

"A beer, please"