Ryanair have cancelled all flights scheduled to take-off before 9am, leaving "lots of grumpy, bleary-eyed people" waiting, one passenger told ITV News.
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The relaxed checkout aisle is to allow people to take longer time paying for and packing up their purchases.
George Clooney referenced the Trump inauguration as he paid tribute to his actor-cousin known best for Twin Peaks and NCIS: Los Angeles.
So it's day one of that brave new world, the year nought in the era AT, Anno Trumpi.