Title says it all, I got the invitation in the mail but Im not sure if I can go. This is for Nov 5-6 at Dodger Stadium in LA. I might want to give it to a friend. Also how many people can you bring?

Nothing to do with the ES forum, so I'm moving this to Car Chat.

For this particular event (at least in NY) they were actually accepting registrations for walk-ins as well. The pre-registration just got you a pre-printed name tag/sticker. By all means bring your friend - they won't turn him/her away.