It has been brought to my attention, that a lot of people simply don’t know what R.S.V.P means. Honestly, I thought it was common sense as to what the acronym  stands for. So to help everyone out, here is the definition:

R.S.V.P. stands for a French phrase, “répondez, s’il vous plaît,” which means “please reply.” The person sending the invitation would like you to tell him or her whether you accept or decline the invitation. That is, will you be coming to the event or not? Etiquette rules followed in most Western cultures require that if you receive a formal, written invitation, you should reply promptly, perhaps that same day. For hosts who are planning a dinner party, a wedding or a reception, this is important from a practical point of view, because they need to know how many people to count on and how much food and drink to buy. More important, though, is the simple courtesy of responding to someone who was nice enough to invite you, even if it is to say that you regret that you will not be able to attend.

So guys be courteous and let your host know whether you’ll be attending or not. It’s rude to show up to a party you haven’t sent a response. Most places you have to pay per plate and per person, and you have to understand if a hosts gets upset with an unannounced guest.

Hope this information helps.