Audrey - I can field those questions. I think the best part was sitting on our veranda after a busy day, just enjoying the sound of the water lapping against the hull. And dinner/brunch in Palos.
the worst has nothing to do with anything about the cruise. On the last night of our cruise last year, I took a spill on the steps of the Walt Disney Theater and felt the effects the next day and on the trip home. Fortunately, it turned out not to be anything serious.
Other than that, there was not worst. If I were forced to choose, I did not like Morty the Magnificent and will probably skip it this time if there is anything else to do.
As far as dinner dress goes, business casual (slacks and a nice polo shirt) works fine in all the restaurants. Even though Lumiere's tends to be more dressy and many men do wear jackets, yor husband will not feel out of place of he chooses not to bring one.