Our venue has 10 booths along the wall that each seat 4 people and we'll have 6 round 10 person tables and one long table as the head table (or two rounds in place of the one long). As you can see, the appetizer plates (thanks Dana and Jay!) are our booths and the placemats are our round tables.
Needless to say, some people are going to be at 4 person booths and they may not like it but they're just going to have to deal with it. You're only sitting to eat and we have some other cool stuff going on so it really shouldn't be that big of a deal.
On that note, do not be offended if you're in a booth vs. a round. We tried to make it work to the best of our ability.