Three-day passes and day passes for Saturday and Sunday are sold out via the NYCC website, but if you have your heart set on walking the convention floor in your favorite stormtrooper costume this weekend, there's still hope. Several retailers around NYC still have passes for this weekend, but you'll have to pick them up in person.
Right now Midtown Comics (200 W 40th St), Image Anime (242 West 30th St), Jim Hanley's Universe (4 W. 33rd St), and The Lair (1808 Colden Ave, Bronx) all have NYCC tickets available in store. There are also a few comic stores in Connecticut and New Jersey who have tickets too. You can see a full list of retails at NewYorkComicCon.com.