We went from Vienna to Amsterdam. I took the Canon SX50...light, pretty good zoom, and darn good quality. After about five days, the stops began to run into each other, but I took many, many pictures and still enjoy looking at them. The castles, rural scenes along the rivers, the colorful buildings, the WW II sites in Germany, and just sitting on the top of the boat and watching the world go by. I wish good weather for you. Post some of the shots when you get back.
I will take lots of photos and post some here. Thank you so much.