RSVP DATE?

Hope the below helps...it's a response I received from an invitation vendor when I was in that stage...

Regarding a time line for printing your invitations, I encourage couples to work backwards from your wedding date. How long before it do you need to make final decisions about food and other details? Then go backwards again from there. Allow your guests 2-3 weeks to respond to your invitations; allow a week or more for them to receive your invitations; allow yourself time to address and send them, etc. On my end, from the time I have everything in house (the paper, typesetting/artwork, ink, etc.) it generally takes me a week and a half to ship your invitations. Allow a few days for them to reach you. As you do all this backing up, you will approach the time when you have a deadline for getting your invitation typesetting to me. Along the line, you should build in some fudge time for things to go wrong. Having made these calculations, you should arrive at a time when I need to have your typesetting and instructions for exactly what you want in house. Of course, if you can provide even more time, that is great for both of us.