Wifi is slow and unreliable. It is free, so I guess you get what you pay for. Also, the charging stations are nowhere near seating. Prepare to sit on the ground.
The people who work security here are horribly rude and unprofessional. I have been harassed more than once after doing nothing but what they say. Try and get through quickly!
The American AirlineStaff here is mean, unhelpful and completely unwilling to help you even when American has delayed your flight 3 times with no explanation and you will be missing your connecting f
If you're leaving from Terminal A and took the metro, don't bother waiting for the shuttle bus. There's a walkway from Terminal B that only takes 10 minutes.
Pre-Security Terminal B is probably your best bet for food and etc. before heading to your gate. Check out Cibo's, Laundry's, and Cosi's for a good meal.