My family (3 of us) will be flying into ZRH, renting a car and driving up to Bremen. From there, we would like to take a night train, on Sept 3, back to ZRH to catch our flight home at noon on Sept 4.

According to bahn.de, there is a train that meets our needs, departing Bremen at 21:30. However, clicking through indicates no availability. This seems unlikely to be true, but I have no experience trying to book trains in Europe.

Tips appreciated…