Hi Jan and Tracey,
Congratulations on selecting what looks like a lovely cruise!
I would be curious to know what restaurant your T/A is reserving for you for your excursion to Lucca. Last summer I spent 2 weeks in Lucca ( it is a delightful city) and had the opportunity to sample some of them. I'm sure you'll love the city. Also, Pisa is very close . I don't know if you have already been there, but if not it would probably be totally doable in combination with Lucca.