why will you be unable to attend?
all it takes is a bit of re-booking.
anyway, here are some more stores accesible any time :P
http://www.imageanime.com/ (at [FONT=arial, helvetica][SIZE=2][FONT=arial, helvetica][SIZE=2]242 West 30th Street, between 7th & 8th Ave (closer to 8th Avenue).)[/SIZE][/FONT][/SIZE][/FONT]
Kinokuniya. It's located at 10 West 49th Street.
Asahiya Bookstore. It's located at 360 Madison Ave (most stuff is in Japanese)
image anime is probably your best choice btw...
ooohhh... dont forget to hit up china-town as well. they have a whole slur of asian stuff (duh, lol)
and if that is not what you want, here is a comprehensive guide to all that is anime in new york city...
http://nyc-anime.com/
dont forget thanks (bwahaha)