I’m guessing no pass, just point to point tickets, is best for this itinerary.
Huh? Whether or not you buy a pass pretty much has nothing to do with which train you take. The railsaver recommendation will be based on “normal” pricing. You might be able to beat that by taking advantage of on-line specials. That will require using the individual national rail company websites and committing to exact dates and times well in advance. What train route planner site? http://reiseauskunft… is the best place to check schedules, but it’s generally only good for pricing on German trains. You have to use the individual national rail company websites for pricing. Probably yes, but it depends on whether on not you buy a railpass and whether or not you’re willing and able to search out the individual national rail company websites and buy non-refundable tickets in advance. It’s cheaper to buy the tickets at the train station in Europe than to buy in advance from any source other than the individual national rail company website. What does railsaver recommend? Why would you need to buy additional tickets if you had a railpass — unless, of course, that’s what railsaver recommends. The short answer is “you can’t” but if you buy a ticket for a specific train (specific date and time) on-line it will include the reservation if required. Why do you want to?