A lad I work with was off just after Christmas having contracted Covid and it's his belief that everyone will get it eventually. The other night I saw him shake hands with one of the lads that he usually hangs around with. If you had a checklist of do's and don'ts then I'm sure they'd have a lot more red flags against their names.
I'd say he's typical of a lot of people who struggle to equate their behaviour with the potential consequences and to them a day out at the park will probably be just part of their inadvertent behaviour that increase their chances of infection.
I'm sure people have read why I'm a bit a rule Nazi when it comes to my personal behaviour and I understand that people with kids especially can't be like me, but I'd argue that a large proportion of infections come from those who don't 'get' why we have to be careful still.
Thankfully the daily figures indicate that we are heading in the right direction and the impact of these rule breakers, be they inadvertent, deliberate or simply unthinking, won't be as harmful to the wider population.