"For rank-and-file developers, lobbying to go to GDC or other learning oriented conferences often becomes an internal battle as people politick their way to be the sole team member to make the trek. It's an even harder sell if the given event is in a particularly remote or exotic location, or raises immediate boondoggle alerts (e.g., the event is in Las Vegas or on a cruise ship)."
Jason Della Rocca dissects the who, what and why of game conventions.