I can't help with the details.
I am off to Belgium in the +8 on Saturday with a few other car club friends we all have cars over 30 years old. Mk2 Jags, E Type, DB7.... . The LEZ's in Brussels and Ghent have caused us problems as we stay in city centre hotels. Brussels we have managed free exemptions. Apply online and it comes back by post. Ghent we have to pay €35 a day and you are only allowed 8 passes per year.