I'm looking at a September sailing, roundtrip out of Vancouver. The two ships I'm considering are HAL Zaandam and NCL Sun. They both have the same itinerary (Inside Passage, Juneau, Ketchikan, Skagway, Glacier NP - not necessarily in that order). HAL is a Sunday-Sunday sailing, NCL is Monday-Monday. The fares are about the same, although I can get some OBC on NCL.
Any thoughts and opinions are welcome. I guess the big differences would be the on-board atmosphere, dining options, spa/gym facilities, and any other insight you can offer.