If you need a break from the noise, Gen Con also has a designated quiet room, with a volunteer manning the room to make sure people aren't being disruptive, as well as dimmed lights, tables & chairs and places to spread out, and plenty of outlets for charging electronics while you are quietly doing your thing. We stopped in on Friday and Saturday last year to unwind and relax and it was just what we needed! They ask that you put your phone/electronics on vibrate/silent (and use ear buds if you are using your phone/tablet) and if you are doing things, that they be quiet and not involve a lot of conversation. Also (and I don't mean this to fire anyone up), this is not a room where parents bring children, unless the children are already sleeping, so if you aren't used to child noises, the quiet room would be for you. The two times we used it, others (and it was never crowded) were "resting" (probably napping, but they discourage that, so, yeah...resting ;)), doing homework, coloring, messing on their phones (again, earbuds) and just decompressing. It was very hushed.
I think the room location changes each year, so just look for a mention of it here or in the event book. We search it out and make sure we know how to get there for the times we just can't people anymore. :)