This was a wonderful day. Our driver/guide was beyond exceptional, knowledgeable, helpful, funny and welcoming. While this is a LONG day it is a great way to get a high level overview of Amalfi and Pompeii.
Skip the Line: Vatican Museums Walking Tour including Sistine Chapel, Raphael's Rooms and St Peter's
It was quite enjoyable to tour with "less" crowds. I have to say there were more people than I expected (we traveled in late May 2012) ... but not near the crowds during the day, as I understand. Highly recommended tour.
Good overview of the history of Doges....very interesting, not too overwhelming.