If that page is the whole set of laws then it's really not so many rules as the article makes out - our rules in Montreal are probably just as long. I'm going to see if I can cherry-pick the best parts for my little corner of Montreal.
I Google Translated the federal law, and it seems to be mostly about how leases are dealt with. I also did some Googling and found what I think is the garden in the article, although there seems to be a few gardens in Wedding. They're big compared to what we have here in Montreal.
I doubt you find much about alcohol consumption in this law since in Germany you are allowed to drink in public at 16 years old (14 with your parents)