Taking the Galaxy from Rome to Greek Islands and Dubrovnik. Would appreciate any info on this cruise and ship. We have a balcony mid ship, 2nd seating, table for 4. What should we not miss and where would be best beaches to go to. Would prefer not to take excursions unless necessary. Like to go on our own whenever possible for the freedom. Is Olympia a must see? Not going to Athens because of the Olympics.