Does anyone have any experience with doing online RSVPs through the Knot's wedding website? My fiance and I are debating whether to use mail back RSVP cards (requiring another stamp to go on the envelope that goes with that and adding weight and therefore postage to the entire invitation) or using the RSVP tool on our wedding website. Is it tacky to do online RSVPs? I wouldn't consider our wedding informal or small (nearly 200 ppl invited, expecting 150 to RSVP as yes). We are also planning to have a sit-down dinner, so guests will need to select their entree. I'm pretty traditional with ettiquette, which I think is kind of a big deal here in the South, such as hand-addressing the recipients' names and addresses on the invitations. If anyone does have experience with online RSVPs, were any guests that are relatively traditional (older family members, etc.) offended by not having a card to send back or having to use the online tool? Is there anyway around requiring the guests to put their email addresses in there? I played with it a little bit and it required me to put my email address in there to RSVP for myself. Thanks for any help and advice y'all have!