Sending an RSVP at the Last Minute
Proper etiquette dictates that you actually need to respond to an RSVP within 24 hours. If you’re unsure whether or not you’ll be able to attend an event, call the host and let them know that you’ll need to check your schedule and RSVP at a later date. Waiting until the last minute just to wait and see is actually really rude to your host.