Haven't been here for a while. Must say we miss Kotor but Dubrovnik also. Visited for a few times and used Mont Travelers service and connection/recommendation for Dubrovnik Star Grad. In Kotor we did serpentines and Budva Old Town, scenic road photo stops and walking tours about 6 hours from the port. Dubrovnik was much easier to see but still need a car for some viewpoints and points of interests. At the end we had a wonderful two days easy booked and well done by the locals. Hope you will find this out useful.