I have booked air tickets to arrive at Pisa on 26 Aug at 12.20pm. Hope to get some advice whether I should reserve train tickets to Vernazza in advance or purchase tickets when I arrive at the Pisa airport train station? I am worried I can't get the tickets on the spot but not sure what time I will reach the train station, in case there is a flight delay.
If I book tickets in advance, can timing of the train I take be changed?
The next day, I wish to take the train to Florence in the late afternoon at 5pm. Should I also reserve the train tickets in advance?