It can be done, and it has been proven it can work. Anyone doubting me, please Google for pictures from a NZ music festival for thousands of people last weekend.
It's not easy though. I haven't been able to travel from where I live for a year now. I read with amazement MNetters travelling to Europe on holiday last year, not an option for me.
However hopefully schools, pubs, music venues, local music festivals you name it will be back open as normal from Monday, all local restrictions lifted.
Yes the local economy has been damaged with the complete lack of tourists and a huge international event being cancelled 2 years in a row. Heck the airport is being turned in to a vaccination hub, might as well use the building for something!
But equally local business is benefitting from people being unable to spend their holiday money in Spain, they have to spend it locally.
If the UK government close the borders and hold their nerve Blackpool and other deprived coastal areas might have the best summer season for decades