We were on the August 1st sailing, but didn't do the port adventure. We did Eddicott arm, staying on the ship to get some photos with the characters in front of the glacier and then down on our veranda. We spent a great deal of time at the glacier and we're glad that we stayed on the ship. This gave us a lot of time to sit and watch/listen to the glacier calve off icebergs. Those on the port adventure would have have a much more limited opportunity to sit in the silence and listen to sounds.