Yup we are still discussing the banquet layout. At first it was going to be assigned seating but we are leaning towards a couple of "reserved tables" and then leave it so you can all choose your own places after that.
I think that should make for a more pleasant atmosphere than being told where to sit, plus less hassle both in the planning stage now and on the night with people all trying to check a seating plan and match it up with the tables in the room. It also means any alterations between now and then won't affect pre-assigned seats!
I'm sold on the non-assigned scenario!!