We've been to Charlie's a few times before. The seating is a little awkward, but we should have most of a room all to ourselves, including a long table and some large booths.
Boilerplate: For anyone totally new - This group doesn't have any specific topic or moderation, it's just a bunch of drunk, very smart people talking about random philosophical stuff, so it basically runs itself. Just show up, sit down wherever there's a free seat, and join in (Also, feel free to move around over the course of the evening. There tend to be five or six different conversations going on at once, and it can often be interesting to see what other people are talking about). I made a reservation under the name Michael S, as usual. Just ask the waitstaff to direct you to us.