Each attending player at Fan Festival will come away with a special in-game item designed for the hardcore FINAL FANTASY XIV collector, making them the envy of players around the world.
Well since anyone can buy it for $20 with live stream I don't think so.

Note however, players who buy tickets but don’t make the event are ineligible to receive this special reward, so be sure to join the festivities and collect your prize!
Or go on the internet and buy it without having to attend.

This is a clear case of miss leading advertising.