Two 50+ females need advice re: travel from Venice to Lake Plitvice to Dubrovnik in mid-May. I would appreciate any tips on the best route (via ferry to Rovinj or bus from Trieste or other?) to maximize time and $$. We have 5 days for this part of the trip, ending in Split to ferry back to Italy. I am not against renting a car but prefer not to if we can use public transportation. Many thanks in advance for the tips!