It's hard to say whether this equivocation represents a move toward or away from the mainstream -- whether Fan Expo is normalizing a themed wedding, or a traditional wedding is normalizing Fan Expo. My instinct is that it's the latter, especially judging by the increased middle-of-the-road press and marketing presence. CBC and CTV were here (either to cover as news or to promote), and press space on Saturday has been more limited than in previous years.
Burton's presence made this all-encompassing nature clear, as his iconic roles on Star Trek: The Next Generation and Reading Rainbow made clear. One would guess that the Trekkies would have been the majority of those who came out to see Burton, but despite the two shows being very different, there was a lot of overlap -- many fans of both in attendance. One even said he got into Reading Rainbow after getting into Star Trek.
In fact, it seemed from where I was sitting that the Reading Rainbow crowd was more hard-core. When, after a number of predictable Star Trek questions ("What was your favourite TNG episode, Levar?"), someone asked about Reading Rainbow, the guy behind us blurted out, "Finally, a Reading Rainbow question!"