Its the same over here in the Uk, sorry but the way I see it is if you ask and are told not to fly in a place (but it is safe and within the law) then dont ask as if your phantom goes down in that area it then makes it harder to get access to collect.
eg: Not allowed to fly along the banks or over the water of a large ship canal, what they mean is it is not public land and they will not allow you to take off or land, then take off outside of the area and fly in to it at 50m above, they dont own or contril the airspace, I as long as it is safe to do so and your not breaking any data protection laws ect then you are not breaking any laws or rules.
It will get to a point where permission is needed to fly anywhere soon so good on you for msking the statment