Like a few other bees, I am using the Perfect Table Plan software to assign seats and lay out the room for the reception. I really love playing with it. I already uploaded all of my guests (no, the invitations haven’t gone out yet. Why do you ask?) and have assigned their seats. The software enables you to make connections between people which will help you assign their seat- do you want them to sit right next to each other? At the same table? As far apart from each other as humanly possible? Are they a VIP? You can lock people in at particular tables. If you spend enough time on that, you can just hit “Auto Assign” and the program will seat everyone for you. It is way more fun than it sounds.
Although I can’t figure out how to create my strange, octagonally shaped room, I can still estimate its size. I cut out space for the dance floor, added the bars, the band and enough rectangular tables to seat roughly 200 people. Here is what it looks like. The left and right sides do not represent walls, so it isn’t as cramped as it appears.