Would it be wrong to have a Native American rich friend’s money come from a casino?

@tictactophat ​ asks: My character, Raymond, is a member of the main cast but not the lead character. He is Tulalip native, and is the only human in the main group with the rest being non-native werewolves. The group as a whole is all fresh out of high school, and the story is about them going on a road trip across America to hunt vampires in an episodic fashion. Since the vampires have corrupted…