From what we've seen in the movies, the entire planet seems to have landing pads and such throughout the upper levels. If they've got a sizable fraction of the

From what we've seen in the movies, the entire planet seems to have landing pads and such throughout the upper levels. If they've got a sizable fraction of the planet's surface area usable as a spaceport, distributed throughout essentially the entire planet, any logistical problems would not come from getting things between the spaceports and where they are needed.