So from what I have gathered, and what I have heard about my FH's family is that RSVPs are hard to get back. I am starting to work on invitation wording, and was wondering what I should put as my RSVP date? My venue has requested that a preliminary number is given to them 45 days prior, with a final headcount due 10 days before the big day. What would you put/ what would be appropriate to put down as the respond by date? Or how far in advance did you put? I have read everything from 2 weeks to 8 weeks! Help!