Which is... ?
IME it's generally a hurly-burly at the bar rather than a specific queue.
Maybe there could be a queue for different drinks, 1 for shit lager, 1 for decent lager (which doesn't actually exist), 1 for decent cider (same as the lager queue), 1 for draught ales, 1 for cocktails and other girly drinks, 1 for non-alcohol drinks (including the piss water that is any non alcoholic beer/lager and, not just for pepsi, orange juice etc). This could be signposted as the "designated driver" queue, then we'd know who to applaud/thank.
Could work.