Surely the incentive of not going for the sake of it if you don’t have any symptoms or haven’t been told you have come into contact with anyone on the test and trace is to avoid a potentially massive hotbed of Covid and stay well and healthy and not risk infecting anyone vulnerable in your family.
However, lemming mentality may prevail. Perhaps they shouldn’t have broadcast where it was and not allowed a 2 day free-for-all. That way people in actual need of a test locally would see increased availability and not have to travel, without all the fuss.