You're right, actually, there were things that suddenly seemed far more problematic when you saw two actors on screen acting them out with other actors than they had in the book.
The bit at the start (ok, which isn't in the book) where they come back to the farm after the legal verdict and their YA children ask what had happened, and GA says 'Bad' and Moth says something inane like 'You've had your summer exactly as planned', like that makes it all just fine.
And Moth telling the family in the tearoom garden that they're homeless -- the book depicts Moth and Raynor having to bravely come up with a cover story to prevent them being icily treated by similarly insensitive people, but to be perfectly honest, someone on holidays with their small children doesn't want to hear a complete stranger's sad life story in a tea shop. That's not people being mean about homelessness, that's just people not wanting to hear the full sad details from someone they don't know when they're just eating scones. It would have been the same if the stranger at the next table interpreted 'How's it going?' as a request to hear their full medical history.
And yes, the time they go into a pub, dripping water, settle in by the fire, drape their manky socks and dripping coats everywhere and then just ask for hot water. I mean, I hillwalk, so it's not that I'm not used to arriving in a pub soaking wet and muddy, but I do then buy something to eat or drink, because that's kind of how pubs work.