You can only rsvp over facebook, not via text, email, phone, in person, etc? I've never found there to be no alternative. Hell for most events unless the outlay

You can only rsvp over facebook, not via text, email, phone, in person, etc? I've never found there to be no alternative. Hell for most events unless the outlay to throw it was extensive you can just show up, I've never actually had an issue with this, and if they actually want you to show they'll call YOU.