(1) I think that I should have said "purchase in advance at home" instead of "reserve." I am hearing from Jean that if I buy them in the States before I leave, I do not have to validate. Is that correct? I do understand that regardless of where I purchase, I will have a seat and coach number, but I am wanting to know if I need to buy them well ahead of time or if I can do it on the day. I am hearing from Jean and the first respondent that indeed, I should buy here in the states. So we will do that today.
A: Anything you purchase at home you will not need to validate.
(2) Ken, regarding the Regionale tickets, you had said that reservations are not possible or required. But then later you did say that advanced purchase tickets are possible. What I should have asked is, can I buy Regional tickets ahead of time in the states before I leave for Italy, and is there an advantage doing that (do I save time at the station, time in line once I am at the station)?
A: I buy my Regionale tickets ahead of time, also, because I already know which time I want to leave a city. For me it's just easier to have them all, show up at the train station 10-15 minutes before the train leaves, and board the train. There are no assigned seats on a Regionale; just hop on and sit in an empty seat.
(3) Again, I am specifically wondering if buying tickets ahead of time would save us time and ensure we would get a spot on the train--as well as save money. The reason: In some cases, such as Venice to Rome and Rome to Florence, we are not quite ready to make a determination about exactly when we will leave the departure city. But if you are advising that we make these purchases before we leave on the trip in order to ensure a spot or make our travels significantly easier, we can land on a time and get that done.
A: The reason to purchase ahead of time is to obtain the savings. If you don't want to commit to a specific time, then just wait to purchase the tickets. (It's good to check the amount of savings & then determine which way you would like to proceed.)
(4) I have seen that some of the web sites instruct us to print the ticket on A4 size paper. Can we just use the 8.5 x 11 available here in the states, or is that not advised?
A: Printing them on 8.5 X 11" paper is fine. I've had the train inspector either look at my paper and enter the code on his machine or he scans the paper. You may also have the code ready from your phone. But, since you have proof or face the hefty fine, I like to just have the paper ready to hand them.
And no worries about the patience of your questions! We all started at the beginning and learned from guidebooks and as we traveled. Each country's train system is slightly different.