It’s going to take a lot of aerial refueling to get them safely there and back, assuming that the conflagration is in the Taiwan area. I have heard that the costs of aerial refueling are obscene — on the order of $20 or more per gallon!
Your right, its not cheap to refuel in the air.For the planes from South Korea and Japan it would be rather easy to refuel since they are close to their bases. The ones from Anderson,Elmendorf,Eielson and Hickam is an entirely different matter.They would have to refuel to get their objectives. Maybe there would be enough room either in Japan or South Korea to house these planes.