I'm sure this has been asked before but searching still leaves me uncertain.
We're traveling from Venice to CT - The fastest route seems to be Venezia SL to Firenze SMN (either Frecciarossa or Italo), and then regionale from Firenze SMN to La Spezia and then CT express to vernazza.
Where I'm stuck is that I've read conflicting reviews about buying the regionale and CT express tickets in advance. If we buy them in advance, then we're not scrambling to buy the tickets and validate them between trains (am i correct that we won't have to validate the regionale and CT if we buy in advance?); BUT if we're late or miss the train then our tickets won't be valid and we'll have to buy new ones?
Thoughts? Wrong assumptions? TIA!