Taxi's are not waiting outside...you first need to check in at Taxi desk inside the airport - rates for most surrounding communities posted on wall - nice touch.
Virtually no long term parking. HPN's flights are usually cheaper than JFK or LGA. Go up a flight to sit. It's usually empty. Go to the gate ONLY when you have to as there is only ONE overcrowded gate
Not enough seating. A power outlet is rare. No gas stations near. Getting around the standing room only crowd to board is like participating in an obstacle course.
May be the most annoying announcement system in any airport. Gate agents just hit a button on phone every time to make an announcement. Bring ear plugs.
The representative for US Airways was extremely rude and unhelpful. I highly recommend using a different airline. The airport is clean & fast- but I will never come through here again with US Airways.