To clarify a touch further:
If you're playing a Shadowrun Missions game, (SRM in the title) bring a Missions character. (If you don't have a Missions character, bring a standard 400 BP starting character.)
For all other games, expect characters to be provided. (We didn't schedule Moo's over the top BYOC games this year due to poor turn out last year.)
All games are intended to run for 3:45. (Except for the SRM Scramble, which is 7:45. That one's a bit special as it's part LARP-ish, part tabletop.)
If you think of it, it's worth your time to pay attention to the experience level indicated for each event. For instance -- in Missions games, we're always willing to take the time to teach game rules. OTOH, for the tournament, the adventure is so competitive and time intensive that we simply don't have time for that.
If you've got specific questions, please ask, I'll try to keep an eye on this thread.