The question Etiquette for a person who has already queued once seems to be a good question about etiquette, and was received and understood well by the community.
It is asking about the etiquette in the UK when a person has to queue for the second time. Simple as that. To me, that is as good an etiquette question as we can hope for in this stack.
So I would like to ask here, why it was closed as 'unclear what you're asking'? And what would be needed for it to be clearer?