Assuming ICE can ever spring for a booth and possibly cover a portion of trip costs I'm willing to work the both with someone and act as the go-between with Gen Con LLC for things like arranging GM Badges and possible housing reimbursement. I live in their neck of the woods (20 miles or so) and am aquainted with them and working Gen Con (I've run events in the past and have worked the Con as a WotC employee - which is who owned it at the time and technically Peter is still the 'man in charge').
To get a GM badge you only need 70 player hours of events. Assuming you have 6 players in a 4 hour event that's 24 hours of player hours. So that's only 4 event slots. Do one like 10am-2pm and one somewhere from 6pm, 7pm, or 8pm to 10pm, 11pm or Midnight on Fri night, Sat morn, Sat night, Sun morn. That's not bad really.
However, to get 1/4th room reimbursement you need 200 hours. That's tougher.