Once we got on the bus at the cruise port, the tour was great. We could not find stop 17 and flagged the bus down. A very helpful driver. Be sure to order a map from Viator in advance so you can find the stops.
A 4 star for ther sights. Our guide had trouble getting people back to the bus on time and monitoring the alloted time at stops. Therefore we did not visit Hverageroi.