Everyone knows the guidelines, it's not like they are hard to follow, why does it have to be up to the government to tell people what to do, there has to be common sense too.
Anyone not following the available guidelines are idiots, if you decide to go somewhere "nice" and it's crowded, then go somewhere else that isn't, don't make a beach or tourist spot more crowded, just because you want to be selfish.
Also if you have symptoms, isolate, get a test done, and stay isolated until you get the result, in fact better still isolate (test apart) for 7 days regardless, just in case you get a false test result, if symptoms persist get another test.
I don't see why people can't take responsibility for themselves and others without having to be told/ordered too.