Right, so I've managed to get a group together, and we're converging for the first time this saturday. We'll make characters (for about 4-5 players) and the ship, but I've suggested a 5-hour period, so I have time to run a little session to go over rules and what characters can do, etc. Unfortunately, as my first time GMing, I've no idea how much time will be left for the session, or how to design a self-contained scenario to cover a maximum of situations.
So, help please? Sorry I can't be any more specific.