We took a ship’s tour of Lubeck last June when we were on the Silver Cloud. This is an old historic city and I would not have enjoyed it as much without a knowledgeable guide. Our tour started from Hamburg and the drive was about 1-1/2 hours each way. We enjoyed it, but if you are toured out, Warnemunde is enjoyable on your own.
We were in Warnemunde on a Voyager cruise in 2003. It is a picturesque coast town with shops and restaurants, and a lot of tourists, many from Europe. We enjoyed walking around and having lunch after a morning tour of a nearby garden show. (The show might have been in Rostock but I am not sure as it was 3 years ago.) If you walk around Warnemunde be sure to walk all the way around to the beach side of town. There is a wide promenade along the beach.
Merril