It's theoretically a good system, but with the convention taking place in Washington, DC in January, my cosplayer friends consider getting one of those precious Gaylord National rooms an absolute necessity, as they won't have to go outside and freeze solid. I don't mind the cold and don't cosplay half-naked most of the time, so when we can't get rooms for everyone, I usually take one for the team and end up farther away. It's all good, though, because it's better than carrying that space heater.
Rock on, guys, and never stop drawing.