What is typically acceptable vs. not acceptable to include in an invitation? By invitation, I mean the entire "package" sent to a guest. Obviously the actual invitation has date, time, place, etc. Is it required to have an inner envelope? It seems like that would be extra time and money spent on that... And an RSVP card should come with a pre-postage stamped return envelope right? If we wanted to include more information for guests about directions to ceremony and reception venues, hotels in the area, etc., should we just include a small separate insert with our wedding website on it? From what I have heard/seen, it seems to be a bit of a faux pas to include registry information with the invitation, but is it ok to include registry information on the actual wedding website? Any suggestions are appreciated