Summer is the time for cruising. Once upon a time cruising the Med was fun, especially around the French Riviera. Now the sea is full of garbage, the ports packed with horror mega-yachts owned by horrid Arabs and Eastern oligarch gangsters, while most Italian, Spanish, and French resorts are overrun by sweaty tourists covered in grease with very ugly wives and children. That leaves Greece, whose Ionian and Aegean islands are still unspoiled except for Mykonos, Spetses, and Corfu. I’ve been cruising every summer for exactly sixty years, so picking out the best trip among so many is a ...