We just got off over 60 days on the Mariner and with a rare exception enjoyed every one of our included tours. For the most part the buses were not packed full even though most of the tours were waitlisted. The included tours were every bit as good as the tours we used to pay for, plus the ones we paid a small amount for were even better. In some of the more remote places in the world that we went to, the buses were older and not as well equipped as we would expect in the U.S.--but these are third world countries for the most part and the buses and the guides were better than we anticipated. The tour desk on the Mariner was very good--much better than we experienced on our last cruise on the Voyager. We were told that a new company is managing the tours now and it really showed.