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.” So is it a noun or a verb or both? Even I know that the “SVP” part means “please,

As if they couldn’t understand that hosts need to know who is doing which. Miss Manners is in total agreement with you. It is perfectly correct, and a lot clearer, to say “Please respond.” The formal version is,