It may be a maze of roads to the backs of casinos, but it's still a small maze of roads. I would expect the mapping of it to be very precise by now.

What's not precise is road work closures, special event closures, detours due to event parking, random traffic patterns during various times of day and random signal availability for both gps and cellular due to massive buillding and parking garages. The randomness of it all is pretty crazy to me if they figure it out.