The judges side is the side with the players benches (opposite side to the penalty boxes).
If you're looking for an all-event ticket, I'm selling my aisle seat that is on the judges side in Section 102, 3 rows behind the judges stand, for $200. Right now on Ticketmaster, you would spend more than that for a seat on the judges side by the time you bought just 3 out of the 5 sessions.