“Please RSVP” is just as redundant as “PIN number”, “ISBN number”, “GED diploma”, “AC current”, “VIN number”, “RPG game”, “VAT tax”, “SAT test”, “COVID virus”, “UPC code”, “LCD display”, or “ATM machine” — which hasn’t seemed to slow anybody down any.
“Please RSVP” is just as redundant as “PIN number”, “ISBN number”, “GED diploma”, “AC current”, “VIN number”, “RPG game”, “VAT tax”, “SAT test”, “COVID virus”, “UPC code”, “LCD display”, or “ATM machine” — which hasn’t seemed to slow anybody down any.