Your photos show just how peaceful and unspoiled Wales is. I think you’re right about the greater space leading to more friendliness. Compare it with London where there’s little physical space between people and everyone ignores everyone else.
Your adventures on the buses remind me of taking the bus through Wales from Cardiff to Bangor many years ago (I’m not sure if the service still operates). It took all day — the route was quite circuitous — but it was great fun! We stopped for an hour for lunch in Aberystwyth where I had to rush back to the bus after enjoying my lunch in a quaint tea shop rather too much!!