What I did last year was sleep only between the hours of 4pm-7.30pm every day of con week. I'd wake up, grab dinner, party, head back to the hotel to change by 2am and start queuing by 3-4am. Crazy does it!
After enduring 2-3 hours of sleep a day for 5 days, crashing on the 23 hour flight back home is EASY. :-p Still, I'm a fan of all the Hall H panel shows so I guess I'm gonna have to suck it up and find a way to last the queue in full cosplay, and alone! Hope to make some line buddies there.