Not sure about a tour to recommend. Take your binoculars up on deck with you while you are visiting Glacier Bay, or other bays. While there, we saw a lot of bears up in the hills. Few down by the water, too.
We were lucky to see around 12 in Denali when we visited in 1999 Some very close to the bus and others in the distance, all wonderful to see Good luck.
I should add we hired a car for 3 days and drove to Denali ourselves and had a great trip.