Need more info to answer this - are you doing the whole package with RCI - flights etc? If so then the coach transfer will be included. Seward to Anchorage: Miles/km:128/206 and it will take around 3 hours. The coastal railway is meant to beome of the most scenic in the world if you are doing your own thing, and highly recommended.
Yes the whole package is booked with RCI but the details I have just received didn't include the form of transfer from seward to anchorage. It only said transfers included. It will probably be by coach. Thanks for help.
If you want to know what to do in each port please go to this site that I direct every one to - Try google and 'cruise ports call boards' - click on the the first result will give you all the info under the appropriate ports section on the page under Alaska.