No queueing allowed outside but only 4 people in a takeaway or small shop so how the hell to you stop a queue?
Simples! You do what our borough council have done about the dangerous traffic queues outside the local recycling centre & do ABSOLUTELY NOTHING You acknowledge the concerns of local residents that the queues are a bit dangerous & might well result in an accident, right opposite a primary school, but you remove the successful queue-management system 2 weeks after implementing it, & ask the people who have been having a good old clear out during lockdown to not queue. "If you see a queue, go home & come back another time"
Ideally you will post this tip on social media & not take any other action, other than hand-wringingly complain that the public are flocking to the place.
No one is taking the "go home & come back another time" advice, because why would you if you've got your car full of crap, ready to unload it? You're going to wait in the queue for 20 minutes, not drive home & unload only to repeat the charade tomorrow, & if you block the street it's not your problem.
But it's not the council's problem because they've told people to not queue.
So that is how you officially disappear a queue, without it actually disappearing!
It's also how you disappear a crowded beach : you tell people to go home after they've driven 6 hours to get there, & act all surprised that anyone would even consider going to the beach on a nice day.