I should think that other accommodations like self-catering would far exceed those numbers. And there won't be any/many foreign visitors.
Possibly not enough for all but a lot of people will likely just stay home (try buying garden furniture, etc, just now) and take day trips to the beach/zoo/whatever.
And people without kids generally avoid the school holidays anyway
Let's be realistic - despite our vaccinations we are still deep in an international health crisis with new variants popping up at intervals. Going abroad for fun is a privilege and a risk, not a right. I'm afraid I have no time for those who rushed off to Portugal and are now complaining about the goalposts moving - we were warned they were on wheels.