A cruise to Alaska is perfect for anyone new to cruising, not only for the exceptional scenery and adventure the area offers, but also because a large part of the itinerary is through the Inside Passage, the protected waters that stretch from northern Washington to Alaska's Panhandle. These waters make for much smoother sailing than on open ocean.
In fact, ALL Alaska cruises go through the Inside Passage.
This may have you concluding then, that all itineraries are pretty much the same. Not entirely accurate - you do have a number choices.