My DH and I did this Carnival excursion a few years ago. We knew we would likely never get to Paris again, just not high on the bucket list. It was worth the long bus trip there and back. We actually arrived back at the ship late, but it was a Carnival excursion. We had an amazing experience at a small cafe across from the Notre Dame, we opted to view from outside versus standing in a long line to enter. At this small cafe we met an America couple on vacation and staying in Paris and a family from Peru whom we were able to converse with in Spanish. We did get to see the highlights and walk under the Eiffel Tower. My vote is do it!