Newport - Town Tour/Drive and Estate Tour was way overpriced and we only saw 1 home and the rest from the road and only a few blocks of the town. In addition, the tour guide talked SUPER slow and was VERY boring! Don't bother booking a tour - You can see many homes from the ship and tender coming into town and you can walk much of the town and see things for yourself.
Boston - We did the duck tour and our driver/tour guide was funny, knowledgeable and we saw many sites. We chose to get off @ Faniel Hall and The Quincy Market - Great place to see history and eat lunch! We bought a bus ticket back to the pier ahead of time, but when boarding the bus, we realized that they let anyone with a Princess cruisecard on the bus for a ride back to the pier - $20 wasted!
Bar Harbor - Unfortunately thanks to our lovely U.S. Government shut down, all of the tours to Acadia Natl. Park were cancelled - So we tendered into the town with 3,000 others and checked out the town shops and ate at a cute little local cafe and got the lobster roll we were promised to get on our tour. Super bummed out that our tour was cancelled as it was one of the main reasons we went on this cruise!
St. John - Lovely town, but the Town & Martello Tower Tour was way overpriced and actually quite boring. We could have seen just as much by doing our own walking tour of the town. The people of this town/port were wonderful - Greeting us with roses for all of the women and a live singer to welcome us and a lone bag piper to see us off at the end of the day.
Halifax - We actually had our own personal family member give us a tour for the day, which was great! Others, who we talked to on the ship, really enjoyed Peggy's Cove and the Titanic Museum, which is within walking distance to the pier.