Can I just show up and play there under a neutral faction lol.
No, sorry. We'd love to see you out there next time, but the pre-orders go fast, and there's no more room at this one.
Given that Darrk is trying to admin this himself, I'd say the real bottleneck is in number of admins. Those 100+ people games usually need to run at least 3 full time staff that are not playing or else content and communication suffer.
I generally believe that the best way to admin is by making team leaders responsible for their team members. The mission orders are pre-written with designated times to be opened on the outside of them. This allows for (roughly) on time delivery, along with clear orders, because I can have a full page to explain the orders, as opposed to short radio trasmissions.
Back on topic. Is there anything special we need to bring that is not currently posted in the front page? Just want to make sure so we have kit in order.
No particularly, a gasmask, if you have one, is useful for the game, but those are available "in-game", all of that stuff will be explained at the event.