What is RSVP? RSVP is a short way of saying “Please respond” in French (Répondez s’il vous plaît). It is used when someone invites you to an event, like a wedding or a birthday party, and they need to know if you will be coming or not. Why do event hosts need RSVP? They need to know how many guests will attend. This helps them plan things like hospitality, hotel rooms, and logistics etc. It