Well, it goes without saying that:
* If you send someone a Save the Date, an official invitation will follow –and should follow even if you know that they won’t be able to attend.
* If you know a guest’s plus one name, it’s best to include it on the invitation
* Your RSVP return card should include postage
* We don’t include our registry information on the invitation, because it won’t look very good. Nowadays that the wedding websites have become very common, gives us the chance to add it there.