If you guys find yourself stuck at DFW for more than a couple hours, hop a shuttle to the rental car building. Lots of couches, chairs, and plugs. The wifi is much better and never overwhelmed like it is in the terminals. Good enough for a Netflix movie or two. The only drawback are no restaurants (only vending) and you have to go back through security. Pointer on the latter is go back through terminal B, short to non-existant lines (Only serves Eagle flights) and hop the skylink to your real gate. I hit this airport almost weekly and hit lots of delays.