I feel like this is applicable on a smaller scale than tourist/locals as well. I have lived in the same place in the same city for 7 years now and I have almost never been to any of the good bars/restaurants close to me. I'm always surprised when friends who live other places in the city recommend me places that I've walked past a hundred times in my neighborhood but never went into, and vice versa. I wonder why it is like that. I don't have a good answer myself.