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When queueing to pay for some milk at my local supermarket yesterday I noticed that the girl on the till was very chatty, making time to speak to everyone and generally seemed to be following what is no doubt company advice to engage with the customer. As she started scanning through the items of the people in front of me, quiches, alcohol, fruit juice, mini sausage rolls, cocktail sausages, vol-au-vents, crisps, it dawned on her that the items were all party food, "Ooh, you lucky people", said the girl on the till "A party !" Silence from ...