So glad you can make it @andigalpern!
No Facebook event (recent experience shows they add zero* value).
Please share the official event/ticket URL https://2019.indieweb.org/sf with designers or others you’d send a FB invite to. It has user-friendly Tito-based ticketing!
*In practice we’ve found that Facebook events RSVPs do not add any new people that would otherwise have made it, and those that only RSVP on Facebook in practice are nearly all no-shows which is demoralizing to everyone. As a result we have stopped wasting time with creating Facebook events, and linking people to a source of negative social media distractions.
For @IndieWebCamp events in particular we need more accurate numbers for estimating food needs etc. A proper ticketing system helps with that.