Hi, Kathy,
We did the same walk in Acadia and Cadillac Mtn. excursion that Masaki has already described. Our experience was quite similar to Masaki and Amanda's, even down to stopping very frequently to listen to bird calls. It was a pleasant walk, but not a brisk walk, due to all the stops. Masaki, the one difference was that none of us got any bug bites. Cadillac Mountain was great - beautiful views; I would have preferred more time on the mountain and less with the birds, but it was still a good excursion, just not as much exercise as we had hoped for.
The other excursion we did was the walking tour of Quebec, including tea at the Chateau Frontenac and a carriage ride back to the ship. This was the warmest day we had, and we neglected to brng water with us,so those of you going might want to remember to bring water along. Our guide was both informative and entertaining and I felt we learned things about the city that we would not have known if we had just walked about on our own. Tea was a welcome break after our walk, and the chateau was a lovely place to relax for a half hour, and there was a good view from the windows.. Each table received a tiered server with various scones, cakes, cookies, and we each chose from a wide variety of teas, some of which were not familiar, but were explained to us well. After tea, we got into a carriage for a ride back down the hill to the ship.
By the way, you do not walk up the hill, but take the furnicular.