This is the best glacier and wildlife cruise. It is an 8 hour round trip to glaciers that reach the ocean a few bays over from Seward. They bring the ship through iceberg-filled water (small icebergs) close to several of the glaciers and stay long enough that you have a good chance of seeing ice falls. The trip there and back does not disappoint either with snowy mountains down to the ocean the entire way and many other glaciers. One location has the most amazing sea stacks. It is even more impressive than in the photos.
The odds of seeing wildlife are quite good. We saw sea otters, sea lions, seals, porpoises, whales, killer whales, mountain goats, and lots and lots of birds. They will go to the known wildlife locations such as rocks popular with sea lions and bird colonies. The ships also communicate with each other on where they have seen wildlife and will go to it if it isn't too far out of the way.
The crew (Scott, Talia and captain Laura) did a very good job of explaining the sights and went out of their way to interact with the passengers. The captain explained a lot over the intercom, which could be heard well except outside when the ship was moving.
The ship is fast so there is breeze when outside. There is space both inside and out, and there is plenty of room since they do not fill the ship. You can stay inside if you want and see the sights through the big windows, but the view is better outside.
The waves were enough that we got a ride when standing in the bow with the ship in motion on the open ocean. The rest of the ship moves much less. This will depend on the weather.
The weather was mostly cloudy for us with on and off rain and only a few sunny intervals (but it was still a great trip). It is worth bringing layers. I had long pants and t-shirt, fleece, waterproof pants, waterproof jacket, and gloves. With all this I was able to stay outside for most of the trip.