So I organized and updated our "final" guest list today. (seperate frustration: After The Knot changed the stupid guest list organizer I just went back and input everything, by hand, into excel.) Anywho...My final number came up 115 people over what I need. I had things under control until FMIL added an additional 35 people(these people really should be invited). So now i'm wondering... what is the typical percentage that usually RSVPs no (i.e. I've been told that if you want 150 invite more than that)? But how many more?