a VirtualTourist member
Taking the train from Orvieto to Venice June 29. Should I purchase on -line beforehand or am I ok to wait until the day of travel and purchase then?
You're ok to wait until the day or a day or so beforehand if you like. There are plenty of daily departures Orvieto>Firenze (Florence) and then Firenze>Venezia (Venice). Venezia Santa Lucia is the railway station in Venice 'proper'.
But if you want to save money you can buy your ticket in advance from the official Italian railway website in English:
Fare savings can be substantial though you will be tied to a specific date and departure time.
You could also, if you wished, just buy a Regionale ticket Orvieto to Florence from the station ticket machines (English language options) on the day (no advance fare savings on Regionale trains and no reserved seating) and then buy a separate ticket from Florence to Venice on the Italo trains.They, like the Trenitalia Freccia trains, are high-speed. There is little difference between Trenitalia and Italo fares, times or comfort but the Italo timings may suit you better. Again, there are good fare savings if you book in advance online. Times,details,fares and online booking in English:
Both Freccia and Italo trains can, in theory, get fully-booked, because no standing is allowed. But, in practice, there are so many departures Florence>Venice per day that the chances of you being unable to get a seat on the day you travel are miniscule.
There are different prices depending on the train you wish to take. You can click on the link below to see what the fares are at the moment. By booking in advance you will save yourself some money
For the OP's information, the 'lefrecce' link given above has *exactly* the same search function and information as the Trenitalia site in English I linked in my first post....except that the Trenitalia link has a clearer display, imo.
'Le Frecce' is just the 'brand name' (for want of a better term) for the high-speed trains operated by Trenitalia: the Frecciarossa, Frecciabianca and Frecciargento. There is no advantage in using the link above over the standard Trenitalia website.
I prefer the Trenitalia link that Leics has provided because it's easier to use. Booking in advance can get you fares as low as 18 euros one way currently on that date but I notice that the fares for such a short day away change daily.