Courteliz- Been there, done that. Here is the deal. You CAN rent a car in Whittier and drive yourself to Anchorage. There are plenty of sights to see (there is an animal refuge park and some glaciers.) You do not HAVE to have your luggage with you. When we went last year, American and Alaska Air had bagge reps at the pier in Whittier. Once you get through customs they can check your bags in and truck them to the airport for you. We had 18 people in our group. We rented a couple of SUVs and we all did different things. Four of us went golfing in Anchorage. Some went to the zoo, and other just went sight seeing in Anchroage. The cost of renting a car will work out to be a little more money than taking the shuttle bus to the airport. But, not as much as a airport transfer/ city tour excursion.
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