This 5 night cruise was our second (first was Carnival Freedom, same ship size/layout) and it wasn't boring the second time around!
Exiting/entering NYC harbor is far more exciting than Florida, especially crossing Lady Libery, passing under the Verrazano Bridge etc. Sailing away and returning home were memorable moments.
Saint John and Halifax aren't exciting in the sense that the Caribbean is exciting, but whales were a big bonus! In Saint John, we tried the zip line too. It was a good first experience and not too scary, overlooking the Reversing River, in which we saw a harbor seal. Most time is spent on the platform, as the group zip lines individually. In Halifax, we took a tour of the citadel with a costumed Scottish highlander and strolled through the Maritime Museum of the Atlantic. We learned some very interesting bits of history in the process of admiring kilts and bagpipe melody.