We had a wonderful time on this cruise. Alaska was so beautiful, and we lucked out and had good weather on all but one day.
Our choice of hotel the night before in Seattle was the Red Lion on 5th Avenue. It was just a few blocks from the Pike Market, so we were able to walk over there after we arrived. They don't offer a shuttle from the airport to the hotel, so we took a cab which cost around $30. The next morning, we also took a cab to the ship.
Embarking was very easy. HAL has a number of staff who direct you to the various stops along the way.
We had a large ocean view cabin and it was very roomy. There were six closets, lots of drawers, and a great bathroom with a large medicine cabinet and bath/shower combination. This cabin seemed much larger than the large ocean view ones we have been in on Carnival.