I am planning (well, past the planning stage now) a 50th wedding anniversary party for my parents. I sent out a ton of invitations, with an RSVP date of June 20th. I had many call to say they'd be there, or that they couldn't attend, but a few from a town where we lived most of our lives, no one called. My mom wanted me to call a few of them, said maybe they forgot or something. I didn't think I had to...but for her I did. With all the planning (13 days till the party) I shouldn't have to hunt your a$$ down. And some of my family didn't even call....all I can say is you better not show up! Because you will not be allowed to stay. I am planning the food according to how many people had enough class to RSVP, and if you can't be courteous enough to call me, I don't want you there.....period.
I'm sorry but if an invite asks to RSVP, then RSVP!!! My god, how long does it take to pick up the phone and say yes or no?

(yeah this is a little pet peeve of mine.......)