You can also decline to have the photo taken, which is what my family and I did the last time we had dinner there. Since we were staying at the Contemporary we went down to Chef Mickey's in the afternoon when they were closed and took our photos in front of the plate.Here is how Chef Mickey's works. You and your family get to the restaurant and upon check in they will bring you to the plate backdrop and take your photo.
They won't put your photos on the card, however on the back of the purchased picture is the 16 digit photo pass code. When you get home and start entering your photo pass cards, you can add the number from the photo. However the only way to obtain the number is to purchase the photo. So you can add to your photo pass but the photographer won't do it for you.