I just miss you by a week. I am on the Star the following week. You will have a great time. read my review of the cruise that you are on at.
First, there is little movement whatsoever, as you spend 95% of the time in the inside passage or in fjords. This is akin to cruising on a small lake. Second, I would opt to dine in the alternative restaurants every night. They are great and offer excellent service and menus. While there is a service charge at most of them, it is well worth it if you want to have a very memorable cruise.
You are going at the very end of the season and expect inclement weather every day. If you don't get it, rejoice. But, folks don't normally go to Alaska to get a suntan...VBG.
All of the ships will be having 50% off or better sales, so be sure to bring some Christmas shopping money to pick up some unique bargains for gifts. You will have a great time, as the Norwegian Star is a great ship and what you make of it.