The AC is an odd case and I hate to use it for comparison purposes. It seems 95% of online Disney fans only found in its final few years (internet and all), when, like the Dole Whip and fireworks on Poly beach before and Orange Bird after, it became the "hip" Disney thing. The final year or so of its existence, it was inundated with CPs under 21, because suddenly they were frozen out of every other PI venue. And once the closing was announced, well, the lifestylers went into overdrive in an attempt to somehow save the venue.
What I'm saying is AdvClub 1989 - 2007 was very different from 2008 - 2009. And while it could get busy, especially the early years, and always had regulars (most of whom drank their weight in liquor), it wasn't until the end that the non-paying Disney-obsessed fans took over. I think the opposite will happen with Sam's. Heavy Disney-fan presence at first, tapering off within a month or two, tops. Except for Gay Day, Marathon Sunday, the occasional Skipper's birthday, etc.