Yes, I saw that you would be on the same route but on another cruise line. We have not been on Viking River but did take a Viking Ocean cruise last summer "Into the Midnight Sun", Norway, Scotland & England. We thought it was very good.
With concern we saw a bit about the wildfires in Australia on the news last night. We have some empathy for the situation since California at times is plagued by wildfires. We have been fortunate that they are not in our immediate area but we have friends & relatives who have lost homes to wildfires.
I remember the first time I saw snow as a teenager and the first time I was someplace while it was snowing when I was much older. We live near the ocean but the closest mountain with snow is only about a 2 hour drive away. You can surf in the ocean in the morning then be snow skiing in the afternoon on the same day.