we are dealing with a time limit on this game. Methinks 42 rented out 12 theaters in 12 cities to show something funky.
from a bit of fandango work, certain theaters are showing "holes" in their scheduling, which I'm sure a gentle caller could confirm with the suspected theaters.
Also, because most folks will park their cars around the meeting areas in the cities, you have to be sure to get the participants back to their car and on their merry way home.
if you meet up at the exact time, 42 will present something awesome and shove you on your merry way on a trail of something (er).
By the end of it, like an hour or so, with online help and running around knees-bent, you'll end up with some sort of item (say a joker card) that allows you entrance to a theater preview (preventing yahoos from entering).
I base this off of what jokerbf mentioned on movieweb:
http://www.movieweb.com/news/82/28282.php
if a "critic" gets the card, the critic will be at the location as well sitting with Comic Book Pants, taking up too many chairs.
So: game, card, theater, enjoy. (or...the nuclear option, one winner per city)