Yes. Sometimes it takes some clever pin-dropping to outsmart some of the auto-features of the app (e.g. if you drop a pin at FedEx Main Ramp at DFW, the pin automatically jumps to Terminal A because the app assumes that because you're on airport property, you must be a passenger at the terminal. Simple fix is drag the pin just outside of the airport boundary and then call the Uber driver once you've requested the ride and tell him/her where you're at, they'll come get you. It's easier to understand once you've done it once or twice).

Yes. Until recently though, DFW only allowed Uber Black and Uber SUV (which are both about 4 times the price of Uber X). Uber pushed hard and got the city to open the floodgates, so now all forms of Uber (X, XL, SUV, and Black) are available at all terminals in DFW

Heck yeah, why not? They email you your receipt. And there's no exchange of cash during the Uber ride. Get in, enjoy the ride, get out, simple as that. It's all handled in the "cloud."

Uber is the future, welcome aboard