CanFulfillIntentRequest should give access to the rough location of the user
CanFulfillIntentRequest should provide some basic context for the user such as (general) location information. My skill is only useful to people in a particular geographic region (the 5 boroughs of New York City). It'd make sense to allow it to fulfill intent requests originating from New York, but not from Chicago. I don't think think there's any way to distinguish at this time.