Due to weather and circumstance I have found myself at DFW a few times
First of all I didn’t actually sleep at the airport, it’s more like quiet wakefulness -
eyes closed but aware of your surroundings, - the people, the floor buffer and that your bag makes a very hard pillow .


DFW gives out cots/blankets/ear plugs and there are Wi-Fi and charging stations
There’s a Hyatt inside T-D and a Pappadeaux’s in T-A.
BTW, Pappadeaux closes at 930pm but there’s a Mexican restaurant that’s open 24-hour.
I’ve also heard there are leather couches landside T-D, but I haven’t seen them as I always stay airside.