I've put blankets on the floor and had my kids sleep there on red-eyes. More than 9 times out of 10, nobody will bother you. Now I'm not always sure the fa's see the kids, so it's kind of a "don't ask, don't tell" thing. When I do get a fa comment, some say it's OK, and some say no. I will say my kids get lots more sleep down there, which of course is a good thing for everyone!