I'm not going to argue with you about visitors, but how do you know they never go into bars and restaurants unless you're just assuming. The area of Pague where they live (Praha8) has more than it's fare share of cafe's, bars, supermarkets and restaurants many open 24hrs. While I don't like Paul, the same goes for any man who uses violence against women, I have to say that while he's as lazy as they come I've never seen him drinking alcohol which for those who don't know is a favourite Russian male pastine along with picking a fight with their friends when off their head.
For information Praha 2 is the Engliash speaking are of Prague