Hi Mark - I'm not sure about the direction arrow, it probably depends on the device you're using, but I would expect it to still show. If there are no directions there won't be any turn warnings though.
If I download a route but do not download the directions will I still see the big white arrow when riding the route, and will my device "beep" to let me know a turn is coming up?
DESKTOP TABLET MOBILE
(no app download required)