Update: I sent an email (below) to sign up for the event and it turns out that the RSVP is just to help judge popularity. To have a chance to get a seat, make sure you arrive to the theatre early to get a good place in line as the "RSVP" does not reserve you a seat.
Thanks for the RSVP for the special screening of TRANSFORMERS. The screening is FIRST COME, FIRST SERVE. PLEASE ARRIVE EARLY, as this RSVP is to establish an accurate head count and does not guarantee seating. No one will be admitted once the screening begins.
Come to the screening dressed as the coolest/most creative/awesome Transformer ever and be entered to win a trip to the Premiere in Los Angeles!!!!