What does that even mean? Every ISP has it's own filtering system, some (or maybe even most of them) are custom built ones. There is no such thing as single government approved DPI.
In my country it's simply illegal. Either you pay (and it doesn't even matter if there exists a signed job contract) or explicitly state that this is NOT a job, but a training practice or whatever.
Not true. Graduates serve for 1 year just as all other men. People who graduated from colleges with military departments get the rank of lieutenant and indeed serve a few weeks, but as of 2017 not too much universities have those departments and even if they do, not every student can enroll there as there are certain requirements for health and physical abilities.
Same thing in Russia. It doesn't always work well, but in most cases it does. As for mass public events - usually there are free street portable toilets provided as well. In most office buildings there are free toilets as well, and in all shopping malls, of course. Cinemas, theatres, medical institutions... All of those are publicly accessible without any questions asked.
To be honest, I can name only 2 places where the toilets are paid in Russia - train and some bus stations and there are paid toilets near metro stations in Moscow.
Yeah, but it doesn't mean that one can draw classic marine art if company needs manga. If the customer wants classic Windows app and you are interested in mobile or web or VR or whatever - you have a problem. Of course, you can create those C++ or Delphi apps at work then go home and spend your spare time creating the coolest webapp ever, but it's extremely hard and unefficient.
My suggestion is not to do it. You will want to get back to IT industry, but it will be rather hard to do if you don't spend tons of spare time acquiring needed knowledge and skills, which is not so easy especially after 30. Source: worked for 7 years as the only developer in a non-IT company (oil and gas industry). The company had a sort of IT-department but 3 persons working there were busy reinstalling Windows, printers, PBXes, LAN, support and so on. I worked at R&D department with engineers and designers.