My husband and I just got back from a week on the Infinity to Alaska. We have saled two other Celebrity cruises, the Reflection and the Summit. This was an older ship but the same layout exactly.
We had 3 ports of call Hoonah (Icy Strait), Juneau and Ketchikan.
Not much to do really in Hoonah except go to the bar called the Office, which is about a 45 minute walk into the small town. Very pretty,
Would likely not do Concierge again.