Well, I'm quite expirienced with these meetups!
We have meetups in the park on International Cosplay Day.
There was the Hetalia day meetup.
And practically ever other weekend is there a Homestuck meetup in the city.
But we should have another something else like international cosplay day.
ps i'm from manhattan
Cosplays: Brock (Pokemon) 95%, L (Death Note) 100%, Kurapica (Hunter X Hunter) 100%, Bikky (FAKE) 40%, Count D (Pet Shop Of Horrors) 70% Dave Strider (Homestuck) 95%
New York Comic Con 2012:
Friday: Sober! Gamzee Makara (Homestuck) 80%
Saturday: Mituna Captor (Homestuck) 80%
Sunday: Mituna Captor (Homestuck) 80%