We did a similar itinerary last year on the Seabourn Sojourn. I have been to Alaska 15 times including twice on our own boat from Vancouver. Many cruise lines advertise the Inside Passage but really don’t do it. Seabourn did and the scenery is spectacular!
The cruise into Misty Fiords is beautiful and the ship anchors there for several hours while the zodiac excursions are carried out. You cannot get off the ship so if you want to explore further you will have to purchase the excursion.
Sitka is a great port with lots of history. Docking is not always guaranteed so tendering is a possibility. September is a great month to go because the salmon are spawning and it’s only a short walk from town to view them.
Inian Islands is set up strictly for the zodiacs again. You cannot get off the ship.
Alert Bay is a tendering port and quite frankly quite disappointing. Once you get off the tender you have to wait in line to be checked in by the locals. (Not fun if it is raining) You also have to check out before getting on the tender to return to the ship. Once you get past the local authorities it’s about a two minute walk to a park that has a lot of totem poles. There is nothing else to see so unless it’s a sunny day and you want to go for a walk...
Wrangell has a first class museum at one end of town and the petroglyphs at the other. No real need for a paid tour as everything is in walking distance.
As someone suggested, you can Google the ports to see the attractions. You can also email the Visitor Bureau’s in the larger ports and they will send you info. Once on board, Seabourn gives you a brochure on wildlife as well as a paperback copy of cruising in Alaska.
They also give you a light weight parka so there is no need to pack a jacket. Just bring sweaters for layering.
If you are into shopping some great deals can be had in September as all the shops are closing for the season.
The cruise you are looking at is unique because it does Hubbard as well as Glacier Bay. Hubbard is a one glacier view and if it is misty or foggy you might not see too much. Glacier Bay has many glaciers that gives more options for viewing should weather or ice hamper conditions.
We were booked on a 12 day Seabourn to Alaska in May which of course was cancelled.
Depending on COVID, maybe we will see you on board.