Thank you, Masonpips, for the suggestion of Captain Marvins. In looking at their website and showing our daughter, this is right up our alley. I sent in the request for the 10 am excursion (the 1 pm would be tight for time in getting back on ship, I think). Now to wait and see if they have room left...
Again, my thanks for taking the time to tell us of your past experiences.