As a foreigner, I am unsure how to interpret "congested" in this context. It must be close to "very much occupied" but occupied by what or by whom? I actually suspect some "deeper meaning" behind the (Which a golf course is, of course)
Most golf courses round here are only visited in the weekend, and not always intensively even then. To me they look like a very good choice for an emergency landing, far better than a supermarket parking or a motorway siding. There is one just before I join my homefield circuit and I always keep half an eye on it, in case the engine should give up right now.