Last year, while my mother did the Florence excursion, I took a cab with my Dad to Pisa for a few hours. (my DH had to leave the cruise for a vcouple days for work!) We had a wonderul time...I had even booked to climb the tour ahead of time over the internet (it can get quite busy during certain times of the year and because it leans, a small amount of people go up at a time). There is alot of other stuff to see in Pisa....a very worthwile day and you could do it on your own.
Cheers, Pam
