As I don't want to waste my precious time and money on a European river cruise line that isn't on top of their game, I've been diving into the latest cruise reviews and ratings, to see what lines are doing well and, maybe more importantly, what lines we might need to approach with more caution. There are 5 lines you should be wary of and they include some of the best-known names on the rivers of Europe. I was surprised about the first of the lines on the lower-scoring list as I had expected them to be rated better.

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