Welcome aboard, Mayra! I'm so glad you found the Moms Panel and that you are planning for a magical Disney cruise!
The photo system on Disney Cruise Line works in a similar way to the Photopass system at the parks, but there are a few differences. Your Key to the World card serves as your Photopass of sorts. Each time you have a picture taken, (and believe me, there will be lots of opportunities!) the photographer will scan your card to assign the photos to your stateroom.
Each day, you can stop by
Shutters, the onboard photo shop, where you can view prints of each photo. Shutters offers a wide selection of photo packages, and also frames and photo accessories. Besides physical prints of different sizes, there are also digital photo cd packages available. Prices of photo cds vary with the length of the cruise. Also, be sure to check out the photo kiosks near Shutters where you can look through all of your photos digitally on the computer screen and order that way.
Unfortunately, Disney Cruise Line does not offer a way to view and order photos at home like the Photopass system in the parks does, so be sure to decide on your favorites and pick them up while you're onboard!
Have fun as you continue to plan your cruise, Mayra, and please stop back with any other questions you might have! I'm happy to help!