I don't know about that excursion. We have, however, sailed through the Panama Canal and I found the experience fascinating. You feel like you are on this giant ship and then you sort of "shrink" as the ship in the lock next to you rises up in its lock. If you are interested in architecture, engineering, American history, or just the sense of adventure you get from being in the Canal Zone, then you will probably enjoy this trip.
I am curious. Does it just go through one lock and then turn around and come back out again? If so, you probably won't get the grand sense of the canal's design and you most likely will not sail under the Bridge of the Americas.