Having never participated in one of these, either, I'm kind of in the same boat.
Larry at CE said that he thought the meet would be the whole day when I talked to him. The store is open 10-5 on Saturdays. I intend to be there the whole time, minus breaks for smokes and lunch. Assuming an hour for setup, and an hour for teardown, we're looking at 11-4 approximately, but there's no requirement to be there at any particular time, so come when you can. He also indicated that anyone is welcome to attend, not just those who have responded to the thread.
Anyone planning to bring equipment that requires power should bring a power strip and an extension cord, 10' long or so. I will bring a couple of power strips, but having it and not needing it is much better than the alternative.
He also told me that snacks/soft drinks are OK with him, as long as we're careful with them. I would strongly suggest only bottled drinks with a screw-top lid. Alcohol is a no-go.
I have not seen the site, so I don't know exactly how much room there is. LingLing, can you tell us how it looks? Larry told me a conference table and another table, but that doesn't tell me how big the tables are. I am a little concerned that we might get cramped if all the equipment on the list actually shows up. I am going to try to get up there in the near future, just to thank the man personally, and to see the layout.