Make sure you disable your rsvp online after deadline.

So we use the KNOT for our wedding website and it was the best thing ever. However, I didn't disable the RSVP. Even though no one can add guests if their name is not already inserted by myself or fiance but people can go in and decline without calling and saying hey I have to change my decision. I am so glad that we had two people being added and I noticed that my numbers were off from the food selection. So if you are using a wedding website make sure you disable your RSVP after deadline.