windsor is not quite as bad, but downtown ottawa on canada day is not recommended, at any age. i have memories as a young child of my dad just fucking screaming at people to grow up...

the city becomes scattered with smashed beer bottles and beer cans, cigarette butts (and i suppose joints, nowadays), turns into a mass public urinal with people pissing everywhere, etc. 

canada day was even worse than a roughriders game.

and, like i say, i'm not particularly adverse to having a beer in public, either. but the type of people that gather and the way they behave are things to strenuously avoid. it's peak grossness, truly.