I see the purpose behind sending the dates very early and then sending out the invitations closer to the wedding, however, I'm considering just sending some combo of the two in the same envelope or just a single card with all the info on it. We're having guests RSVP on the wedding website- no paper RSVPs. So would sending a save the date/invitation mixed card with the wedding website as well as the RSVP deadline work? It's a family-only event, so I think it would be easy if we informed parents/grandparents and had them spread the word.