Almost 1 hour
It depends on number of people and the number of questions.
I was there picking up a load of beer for delivery not for the tour.
It depends on how many people ask questions. The guide is very informative. It's about 30-40 min on average.
About an hour if I remember correctly.
Mine was and hour
30-45 minutes, maybe a bit longer if your group asks a lot of questions.
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