I got the email and used the link to RSVP -- but then when I visited the link later, I got the "Sorry to say we didn't accept this application" message. Is this a bug stemming from the application somehow being marked as completed and being taken out of the 'active' list, or some such?
Edit: I did get the "See you there!" message when I RSVP'd as "Yes" initially. It only gave me the rejection message when I went back to /susrsvp after that.