D's ceremony and reception will be in a gated community where we have to provide a list of all guests attending and it has to match up with the caterer's list...if we have 225 meals then 225 guests get in at gate. How do you think this can be communicated in the invites? I thought we would write something on the rsvp card but wasn't sure how to word this. I can just imagine some people not rsvping and trying to come at the last minute.