Well, I hope I know who's who and where to sit. It'd be awkward if I turned up first and didn't see anything in particular that would indicate I found the right people. I don't want to go up to people and say "Hey are you from the amiga.org forum?".
6 foot shaved head guy, OK. Lets hope that's the only one

Anyone going to be wearing a particular T-Shirt or jumper with a certain logo on it? Mine are all plain.
Edit: How am I supposed to know someone with a shaved head has blonde hair?

If this table is booked under a specific name or group and certain amount of people, that'd be good to know.