Having conducted a gazillion management workshops over the years, I've often wondered about the factors that go into where attendees choose to sit. Here are some possible theories:
Front Row Tables: The assertive, the hard of hearing, and those who live in fear of PowerPoint slides with small font.
Second Row Tables: Those who want to be close but not that close.
Middle Section Tables: Those of moderate views or who arrived after the front and the back seats were taken.
Back Row Tables: Those who like an easy escape, who don't want to risk being put on the spot, or who were forced to attend. Often, the wittiest or craziest comments come from the back row.
Now this is clearly affected by the placement of the refreshments. Put the coffee near the sides and the middle rows will flourish.
In most cases, however, the back seats are the first ones taken. We could probably charge a premium for "Back Row Seat Near Exit and Coffee."