And not a single incident of rowdyism.

Methinks you speak too soon, wow

Au contraire, dear Rubrick! That sillyness documented in the Irish Times happened in New Orleans ... NOT in Boston! And the 11 p.m. TV newscasts showed Government Square all cleaned up and nearly empty.
As to the New Orleans goings-on ... well ... don't the Japanese have a saying to the effect that when one travels on vacation manners may be left at home?
Anyway, I'm proud of our Pats! Mr. Kraft, the owner, recognizing the team as the New England Patriots, is planning similar celebrations in each of the New England states. I hope he chooses Portsmouth in NH, as it's just up the road a piece ... but fear the choice will be Manchester. Sigh.