If you are interested in the actual events occurring, I'm sure there will be a lot of fan coverage and possibly even some press coverage (maybe). They'll also likely release any ultra cool videos they present, and possibly even do a Live Letter AT the festival (like E3, for example). I recall back when ARR was first launching, there was some sort of Ifrit hybrid fight at a convention (somewhere between normal and hard mode) where you won a t-shirt if you beat it within a certain amount of time... that was broadcast by SE; I watched it. So, for people at home, I'm sure you'll get to see some pretty cool stuff... you won't get any of the goodies though. For me, I'm most interested in meeting like-minded people who clearly love this game as much as I do, trying new content before it's released (maybe) and seeing if there is any cooperative OR PvP competitions (like fighting the primals for a t-shirt, or a small arena-style tournament).