This conversation is madness. It doesn't need to be justified to anyone. There's nothing to justify. It does not go against any advice, there is no restriction on or advice against travel to any of these places or what you should do on return. If there was a danger in visiting these locations the home office would be advising against all but essential travel (like they were weeks ago), but there's not so they aren't. It's more dangerous to visit many parts of the UK right now. Holding people to standards which are based on your own lack of knowledge or understanding of current advice is a bit silly. Now looks like the perfect time to travel to many foreign parks, cheap flights, rentals and accomodation, quite parks. We should all be out there making the most of it.