Ok Pam, help us out here... forget everything else? What do you mean by that? The Cruise is not going to take you anywhere near the arctic cricle. Going there is an entirely different kind of trip. I would say that would be classified as an expedition.
As far as Mt McKinley goes, you can go to Anchroage a couple of days before and take a trip to see it. But getting to the circle is something completely different.
Warnings? Don't huge the bears... they don't like it.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013