Marcyc* - location on board the ship is of little importance - you'll be on deck most of the time. Packing for the land trip is more important - I've done it - layered, comfortable and casual is the way to go (in that order!) Comfortable, good grip, walking shoes are a must - take sunglasses, gloves and waterproof windbreaker. Jeans are ideal for most everything on land - a jazzy top will take you anywhere. Chances are you'll only have one formal night - long skirt and that jazzy blouse will be fine - not too many men take a tux on an Alaska cruise.
Take binoculars and lots of film.
Enjoy............. and please come back and tell all!