Sue,
Read the posts under the MUSH heading. We have a group cruise and we've booked a lot of private things.
The White Pass and Yukon Railroad is Skagway is a nice excursion. RSSC has a private car for those on that trip.
In Juneau, you can walk across the street from the port to take the Mt. Roberts Tramway to the top; Our favorite excursion was the Taku Glacier Lodge by Floatplane in 2001;
We're doing Island Wings (non-RSSC) Bearwatching Expedition booked directly with
www.islandwings.com in Ketchikan.