Trying to decide whether to take ship's tour of Berlin or just go it on our own from Warnemunde. Would appreciate some guidance from those who've done it on their own, as well as those who've gone with the ship's tours. If you did it on your own, how was the trip from the port to Berlin (time, cost, hassle)? How did you get around in Berlin, did you have time to really see the city, and would you do it again on your own or would you opt for a shore excursion? For those who did the ship's tour, what did you get to see, and would you do it again or opt to do it on your own next time? Thanks!