Odd story and understand that not being able meeting writers, artists, etc.
I went to a ComicCon in NYC. I was suppose to meet up with John Layman, grab a coffee or something. We had chatted it up and plans were made. However, that year was the first year for NYC. The organizers had no clue what they had gotten themselves into, and it was not an easy event. In fact, after that, they changed how they organized the event. I had returned and attended. I can attest they got better.
Anyway, back to Layman, we had to cancel because he was nervous that if he left the building he would not be let back in and he panels and things to do for the convention. The Fire Marshal stopped the organizers from allowing people in, people who traveled from PA or MA or farther who had purchased tickets in advance were turned away. Because for some reason organizers were worried about attendance. They allowed the general populace to buy a ticket not realizing that pre-purchase ticket holders had not all arrived yet. They got roasted in papers.
The amusing thing, I went to MidTown Comics, its in Manhatten (I think), and the place was packed with con goers who couldn't get in and it was therapeutic for all because it was a topic of conversation for all those fans.
Let me tell you, that shop is amazing.
I've been to San Diego Comic Con too but holy cow is that one crazy. It's organized but crazy at the same time.