Miss Manners: Answers to questions on the etiquette of RSVPing and using lotion at the dinner table

Is it impolite to send a handwritten note as an RSVP when directed on the wedding invitation to use a QR code instead?

Miss Manners: The wedding invitation wants a QR code RSVP, but I prefer handwritten notes

A wedding guest wonders if it’s impolite to send a handwritten RSVP when the invitation specifically directs guests to use a ...