My guess is that a "turnstile attendance" is the count of how many times people entered the Con. If that is the case, then 82,000 is understandable. Hell, I must have gone in and out of the Con at least fifty times over the four days I was there.
My question is how did they arrive at that number. I never saw anyone counting, and I certainly didn't go through any turnstiles.
My question is how did they arrive at that number. I never saw anyone counting, and I certainly didn't go through any turnstiles.