Is this their first time holding it there? Speaking personally, having it at the Scottish Rite building makes it that much more exciting.
No. The event has been held at that place both in 2011 and last year.
And I never knew?...or never thought to look.
Anyway, I've seen my share of other happenings in the building so I can easily be kind of a guide.
Myself being both a Mason and a cosplayer...I can't find a reason to not be there.