That might slow things right down, unless England crashes out early.
And Scotland and Wales, for those of us Brits who are not English, not in England or both
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In my experience it doesn't make much difference, but then I watch all the games I can anyway. What it can do is provide an excuse for punters to nip out for a couple of hours (and there are some extra open air showings too, so plenty might have somewhere to go out and watch).