The only excursion we did in Alaska was the train in Skagway. We did it through the cruiseline because at that time, the price difference was minimal - however, I've heard that there is now a significant difference. The terminal is right off the pier if you do the train. We didn't do excursions in either Juneau or Ketchikan - just walked around town and went exploring. The natural musueum in Juneau was wonderful. Haven't been to Victoria. Whatever you choose to do, you should enjoy Alaska - what a beautiful place.