I Don't mean to hijack your thread but I have the almost identical question. We will be on NCL in September and also going to Ketchikan, Juneau, and Skagway.
Both boys LOVE trains, but we are squeaking in on our budget even to just to get to go on the cruise. Which train is best for the price as I noticed there are few options for train rides.
I think we will be doing the Duck tour, that sounds like a lot of fun for the boys (5 and 2.5) and we definitely want to do some hiking to just explore nature (really want to see the Mendenhall)
What else am I missing?