I need to book the following train tickets
Rome - Naples (round trip, just for the day)
Rome - Florence (1 way)
Florence - Venice (1 way)
What is the best way to do this?
What train class (1st, 2nd) should we take for each? what are the differences?
I notice on a website there are 3 different ways to book, the cheapest called "MINI". Can someone explain this the differences?
Thanks in Advance,