We are in Dubrovnik Old Town for a week with 12 year old daughter. After doing City Walls, museums, cable car, Lokrum, Cavtat and a few evenings wandering Old Town, I'm looking for some ideas for our last couple of days. Is it worth getting the bus to the main port at Gruz? Any other suggestions to fill a few hours either daytime or evening without breaking the bank? (We're not beach fans).