Just a bit of advice, the tram that runs the length of A will shut down at a certain point, but the announcements will keep going through the night. So between the "woosh" of the train and the announcements, don't plan on sleeping much even if you are a heavy sleeper.

Also, I don't think you will be able to get the air mattress motor through security. Fan blades and TSA don't mix. You may luck out, but I wouldn't bet money on it.