Thanks again for the advice p40whk.
A bit hard to ring the companies from Australia but I have contacted Temsco by email previously.
My wife has her heart set on the Glacier and Dogsledding combine.
HAL has a 4 Glacier and dog sled adventure for $479 but through Temsco the price is $419
To do just Mendenhall and dog sled is $483 through HAL.
We have just about decided to make that our only shore excursion now and will just walk Ketchikan.
In Sitka we may do just an historic walk and Raptor centre or just walk around the town ourselves and take a local transport to the Raptor Centre.
Thanks again and have a good day. It is 9.40 am Tues 28 Feb here