According To Etiquette RSVP is the abbreviation of the French répondez s'il vous plait, or "please respond," so your host is asking you for a response to their event, be it a yes or a no. So ...
DEAR MISS MANNERS: Maybe it’s because I took Spanish in high school instead of French, but what’s with “RSVP”? People say ...
DEAR MISS MANNERS: Maybe it’s because I took Spanish in high school instead of French, but what’s with “RSVP”? People say “Please RSVP” but also “You haven’t sent an RSVP.” ...