"It seems, that is, I may have become, quite by accident, the chosen, what what?"
“Here is my secret. It's quite simple: One sees clearly only with the heart. Anything essential is invisible to the eyes.” ― Antoine de Saint-Exupéry, Petit Prince
I see that the events are $0, so do I need to bring generic tickets? Do I need to get the tickets so that I make sure I have a seat?
You need a Trade Day pass. I'm pretty sure they are sold out now.
You can contact the person on that page to see if they are.