WCMO....
In Thailand at the moment and queueing seems to be a bit of a furphy. Say there are two counters selling tickets for an attraction. There's no tapes or ropes to create one queue per counter; in fact, there's no tapes or ropes at all. There is a line at the "first" counter (or rather, it's growing to the side of the counter, not directly in front of it) and my instincts tell me that that is a single line and the next customer is served by the next free counter. Classic single queue feed for a bunch of counters, a common and equitable approach.
Of course, some tourists don't get the idea and see the rather "empty" line in front of the second counter and proceed to walk right up to it. Their thinking of course is that it's one queue per counter and everyone standing in line is being rather stupid not to queue for the second counter, so they're getting express service at the expense of supposedly everyone else waiting being a moron.