This was the first time we visited this particular port in Atlantic Canada. While doing our research for this cruise, we learned about the Reversing Falls which is the most popular attraction in Saint John. The mighty Bay of Fundy causes the Saint John River to reverse direction twice every day and flow upstream. It is recommended to view the Falls twice - near low tide and near high tide. Tide charts can help you plan your visit.
The pictures above on the left were taken at high tide around noon. The pictures to the right were taken around 3:30 PM at low tide. Notice that the ship was about 14 feet lower in the second set of pictures.
Saint John is a port that you could tour on your own if you liked. There are tours for sale in the cruise terminal. I have to caution you that they could be sold out, however. We were booked on a Bay of Fundy Coastal Photography tour through Carnival, but we did ask about tours that were available. At that time, the only tour that was left was a San Francisco-style trolley tour . That tour is 1 hour and 15 minutes long with photo stops at the Reversing Falls Rapids, Historic Trinitiy Royal, and Fort Howe where you would be able to view your ship.