I am looking at booking a couple of overnight trains through the DB BAHN website and hoping someone can help distinguish the different prices. Do I need to meet any special criteria (ie RailPlus holder) to purchase Global Fare Saving-Night? Additionally, what is the difference between Global Fare normal, global fair saving-night and normalpreis? Any help would be much appreciated.
First, RailPlus is a railpass available only to European residents, like the Eurail pass is only available to non-Europeans. You don't need it, nor will it help to have a railpass if you want to purchase a Savings-Night fare. Savings night fares are a special discount for advance purchase, non-refundable tickets. Global refers to a ticket that includes both the rail portion and the accommodations (seat, couchette, sleeper). Normalpreis is probably just a global preis. If you book through the Bahn, unless you have a railpass, you will see two prices, the normal, full fare, exchangeable ticket, and the advance purchase, non-refundable Savings Fare.