We are in high season, so I recommend you contact the people in charge of visit berlin and that they clarify everything for you.

I didn't experience any problems with time slots. My friend and I just rocked up at the Pergamum and got in. I guess we were about an hour inside. Personally I wouldn't want to do more than one in a day, but maybe that's just me. I certainly enjoyed it, but I'm not a huge museum goer - one was enough .

Sorry for the late reply...Yes, there are many boat tours of the Spree river. We did not take on, but next time we are in Berlin, we are planning on doing a boat tour.

Nem kell előre időpontot foglalni!Nyitvatartási idő (opening hours) megnézhető a honlapon és online jegy is vehető!

All of the museums should be open with the exception that the Pergamon altar is closed for several more years, but the rest of the Pergamon is open. Don't miss it. To compensate, there is now a separate Pergamon extension that replicates the altar using a movie style screen. Its huge and 360 degrees. Don't miss that either. It is a short walk behind the Pergamon itself. Get to the museums early to avoid lines. The museum pass is a good deal if you are seeing several. Audio guides are free and superb.

In some museums, like the Pergamon, it’s included. Some charge a little extra for it.

Machen Sie eine Onlinereservierung und danach machen Sie die Zeitreservierung. Wenn nicht viele Besucher da sind, dann brauchen Sie die Zeitreservierung nicht und können zu jeder Zeit das Museum besuchen. Sie werden begeistert sein! Herzliche Grüße!

museum island is free to walk around and tickets to enter the various museums are bought at the various museums.

Mi dspiace ma non posso aiutarti, forse e il caso di lasciarlo in hotel