Official language of the Congress is English. No simultaneous translation is available
The official currency in Germany is the EURO (€).
Berlin, like the rest of Germany, has a Central European Summer Time (CEST) in summer and a Central European Time (CET) in winter.
The standard power sockets in Germany are Type F, like other European countries, except for the United Kingdom and Ireland. If you need an adaptor, you can either get one online, once you get to Berlin or ask the staff at your hotel if you can borrow one.