Its fucking laughable. They have a captive audience of beer swilling football fans and they can't serve them quickly and efficiently. Plus, most of those serving seem to wish they were anywhere else on earth but behind the counter. I know it's not the greatest job but the lack of enthusiasm or actual organisation is amateur. In fairness it's the same at most sporting venues I've been to. Wembley, despite the overhaul still has massive queues in one part and then round the corner there's no one at the bar. But no one tries to organise people to even it out.
Also at Wembley it's £4.80 a pint. Just make it a fiver you twats, it's easier than fishing round trying to give people change.