I just went to a wedding where the invite had a link to their website to rsvp and look at their registry. I thought it was really easy and a good idea, but I also see tons of people have pics of their invites which include a bunch of different pieces.. and that looks nice too. I was thinking for older guests they may like the traditional mail-in RSVP better, but I don't think the link is too " techy" even for my grandparents and other elderly relatives.. idk what do you guys think of each way??