It is my understanding from taking both economics and business classes, that the money the Muslims spend at Six Flags will be just as good as the money you or I would spend.
Gee, you needed a class for that? You might want to take a class on how Islam is slowly taking over the West.
What they don't cover in economics and business classes is this is not about money. It's about control. It's about power over the kuffar. The kind of power that reinforces their own delusions of grandeur but witnessing the power of allah over the kaffir even in the belly of the Great Satan itself.
Islam claims territory in a similar way to dogs peeing on poles or trees to mark their territory. Once they lay a claim of how islamic "settlements" of sharia was "accepted" or "practiced" in territory in what was considered the darul harb, they eventually lay a claim to it, and have (from an islamic POV) a reason to wage a jihad for this "marked property" in the future...