History /
Question about interwar Poland [13]
That would depend on what region of Poland they were living in, whether they lived in a town/city or the countryside and what social class they belonged to. It's a good question and a very interesting subject for a dissertation. I don't know of many books on the subject. I think you'd have to read quite a lot of different material from different sources and draw a few conclusions from them. This is a good site with different articles about all things Polish. You have to search for inter-war stuff though:
culture.pl/en/article/the-hussies-gentlemen-of-interwar-poland
culture.pl/en/article/polish-tangos-the-unique-interwar-soundtrack-to-polands-independence
culture.pl/en/article/the-rise-and-fall-of-polish-song
culture.pl/en/article/polish-cinema-interwar-period-film
If you know Polish and you can get hold of any old magazines it would be useful. Articles and ads can give you an insight into life at the time for the middle classes.
A book I've read is 'Polska Przedwojenna, Pre-war Poland' published by Bosz. I got it in a museum but you can buy it online. It has the Polish text on one side of the page and the English translation on the other. It's really more of a photographic record but there is quite a bit of information there and it does tackle 'ordinary' things like shopping, sports, leisure time etc.
gandalf.com.pl/b/polska-przedwojenna-pre-war-poland/
One thing I can tell you is that the largest single retail space in Poland in those years was the Hala Mirowska, an indoor/outdoor market in Warsaw which is still in business today. If you visited it and saw how small it is I think you'd be surprised.