Glacier Bay is a National Park, and access is limited and controlled. We sailed on HAL over the summer specifically to visit Glacier Bay and it was incredible.
A park ranger boarded our ship to talk about the glaciers, and a native Alaskan went to the kids club to talk about life in Alaska, and to show them one of her fishing tools. I went to get my 12 year old son during the talk (I didn't know it was happening) and he wouldn't leave because it was so interesting.
Before we sailed I was on the fence about whether Glacier Bay was a must-do. Now I agree, it is a must-do, at least once. If this is your one and only Alaska trip, go to Glacier Bay.
The photos I took look like paintings. I did not do anything fancy to take these photos. Some were taken with my camera, some were taken with my phone. It was breathtaking.
The below photos show the size of Margery Glacier compared to a cruise ship. Our ship went where that Princess ship is in the photo. The captain did a 360, and then hung out for a while. It was amazing. There were tons of icebergs, and we had some good wildlife sightings.