Hi! Come to our next meetup, and have fun. If you RSVP "yes" and then don't show, that's called a "no show," and it doesn't help us when deciding how many seats will we need in our venue, so please:
Use RSVP to:
-say you will come
-say you won't come(or don't, if you didn't RSVP yes, and you won't come anyway)
-change your RSVP from yes to no (before the meetup starts)
Thanks for being considerate and RSVP if you're coming to the meetup or simply changed your mind and are not coming.