There were no English speaking guides available the day we were there, so we were placed in a German group and given audio guides to follow along. I usually don't mind audio guides, but their audio guide system definitely needs some improvement.
There are numbers placed at different stations and stopping points throughout the cellars that are supposed to correspond to the audio guide. However, many of them are missing numbers or are off by one number. It was confusing and this made it difficult to follow along.
The audio guide also only gives brief information at each stopping point, while the guide continues to speak for awhile longer. Therefore, you must wait while the guide speaks to the rest of the group until moving on. We felt as though we may have missed a lot of information.
Another issue I had was with my headphones. One of my ear buds was not working properly so it was difficult to hear. My friend who was with us had the same issue with hers as well.
Aside from the audio guide mishaps, the tour itself is fairly interesting. If you can arrange for a guide that speaks your language rather than the audio guide then I think it would be worthwhile. Otherwise, I would skip it.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.