We plan to stay three weeks in Lucca, doing day trips to Pisa, Cinque Terre, Viareggio, Florence, Siena, etc. What is the most economical way to purchase or handle travel by train? We are a senior, one adult, and a 16 year old traveling together. Since we are staying right by the train station, I would love to be able to have a pass which would allow us to hop on about every other day or so. I can't determine if it would be cheaper to buy tickets as we need them, since they are relatively short regional trips.