but I'd ask for a refund.
Airplanes actually fly better and more efficiently close to the ground. It's called "ground effect", and it's something all pilots have to deal with when landing and trying to get their airplanes on the ground. In WWII, some long-range flights actually flew just above the ocean (the effect usually starts about a wing-span distance from the ground/ocean). The increased efficiency allowed for longer flights utilizing the fuel on board.