I am traveling to Frankfurt next week for school. The week after, my wife is joining me and we're going travel for an additional week. I have two questions. First, when trying to order train tickets on Bahn, I notice that on the savings fare page, if I select two tickets vs 1 ticket, the total is 19 euros higher. Is it cheaper to order tickets individually? Are these tickets tied to a specific seat or just a specific train? The example I'm looking at is from Frankfurt Main to Munich on March 23 leaving at 6:54. It's 49 pounds for a single ticket, but 119 pounds for two tickets. Is there a more efficient way to purchase tickets if we plan to use the trains multiple times? I know it's sort of last minute.
My next question is related to renting a car. Would it be wiser to rent a car vs paying for train tickets? We do plan to make our way down to Venice for a couple of days. The car rental would be $350 plus gas. The only downside is that we could take a night train from Munich to Venice and wouldn't waste that time in a car. Any suggestions are welcomed. Thanks everyone.