My husband and I are taking a cruise leaving from Venice with a stop in Livorno (Florence/Pisa). Instead of booking an excursion with the cruise line to either Florence or Pisa someone suggested we consider taking the train out of Livorno into the walled town of Lucca. We will be in port in Livorno for about 11 hours. Anyone every done this - how difficult would this be considering we will need to be back to the ship the same day. Any info will be appreciated, Tks.