If you were arriving in Anchorage (taking a 3-4 day train/motorcoach tour) and then sailing on a 7-day cruise, would there be a place to store luggage in Anchorage so you do not have to transport all your luggage on the first leg of your trip (the 3-4 day tour)?
If your 3/4 day tour is included with your cruise your cruise company should be able to help you. Also check with the hotel you are staying at in Anchorage, sometimes they will help also. I think there is storage at the airport but not sure. Have a great trip.