You can while at the parks get your Pics all taken on 1 or multible cards (write the number on the back of card incase you lose it they can find your pics).
You can check your pics a few hours after they are taken at different photoshops at WDW (this way if one doesn't turn out you can go back and have it retaken).
You can buy a CD ( $ 99 ) with all your photos on it and get them printed yourself,Buy pics at WDW or view them and puchase on-line from home up to 30 days or 60.
The photographer are located at the entrance and most characters stops in all the parks so you could have them take many pics. Also you can give them your camera and they will take a pic with that as well.