Group Jive events - creator is automatically an attendee?

Yes, that's what I see. Whilst the "0" was not particularly interesting, the "of 6 Guest" was very useful even when nobody had signed up because it let prospective attendees know that there are a limited number of places and perhaps they should sign up soon!

Yeah, that makes sense. Have released a new build that will display 0 of # Guests if there's a Limit supplied to add some urgency. It however won't link to the empty attendance page when there's 0 guests as that was a bit pointless for it to do.