About 10 years ago while I was on a cruise (not DCL) I did the bike and brew tour in Juneau. I really enjoyed the bicycle tour and the tour company offered several breaks so it wasn't that difficult. The views where absolutely beautiful and the tour company was good. On the downside I happen to be on the last cruise for the season and the bicycles where in poor condition which resulted in attempts by the tour company and myself to fix the problems with my bicycle. Luckily the bicycle ride wasn't very long or very strenuous. You will get wet/muddy on this tour (I believe the tour company offered rain gear or I had my own) but my shoes where soaked. After the bicycle tour and a little exploring at Glacier National Park we headed to the brewery for that portion of the tour. I'm not much of a drinker but it was fun to sample various beers. I hope this helps.
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