The 7-day ticket is stamped on Friday of week 45 in 2016.
I bought it on 11th Nov about 11am, from a ticket vending machine in Wedding S Station, for 30 Euros, and immediately validation stamped it to start using it.
Of course you can find the one in fifteen driver who will take your family of five (as we did try this once), but it wasn’t worth the hassle or the fare.
Train travel seemed be the best option for our family and the purpose of our trip…enjoying as much of Germany as possible and forcing our selves into the way of the locals.
Other than the automobile, rail is by far the most common means of transportation.
Although there are a few independent regional rail lines, the main passenger rail system in Germany is the Deutsche Bahn (DB, or German Rail), also known colloquially as "Die Bahn".