District 4 was a little chaotic. We had a couple trolls, some sloppy attempts at a ribbon formation (we chose to form around the fountain, where all the AFK'ers were -- d'oh!), and no staff appearances while I was there (3-6PM, Pac). But we still had fun with trivia and a "konga" [sic] line. The FoS and RISE folks were very nice and very generous with the booze (my blossoming Drunkard title thanks them).
I hopped around towards the end to set off fireworks, and popped into Dis11 where Opal had set up camp, to find Stephane had showed up. Looked very cute in pink.

(We all looked very cute in pink. I'm so glad ANet helped out in that small way.) I mentioned it was my first Pink Day and someone instantly handed me some grog. (Drunkard title even more thankful!)
Even an hour after the official close of the event, District 1 was still packed and I could never get in there, so I ended my participation in District 2. Very lively.
Since, as I say, it was my first Pink Day, I have nothing to compare it to, but I'd say it was very successful. I'm so glad to see the GW community come together to do this. Looking forward to hearing the final total of funds raised!