The ferries are not fancy, and some are just plain run-down, with tattered upholstery and torn curtains. They in no way provide the glitz of luxury cruise ships. The ferries have no telephones, in-room TVs or Internet service. I found that sublime, but not everyone would. The food on board is basic cafeteria food, but there are a lot of options both hot and cold for all three meals a day.
Prices are moderate.
There is no restriction on bringing your own food and beverages. Passengers who want a lot of on-board entertainment also won't find it on the ferries. There are lectures provided by U.S. Forest Service staff on the ecology and history of the Inside Passage and its ports, TV lounges, an on-board movie offering and a few video games. Most ships have a bar, with a piano. The scenery of the Inside Passage, the company of my fellow travelers, and a good book were all I wanted.