Hello Arlei,
    Congratulations on your upcoming vacation! Get ready to say "cheese," because there are literally hundreds of 
Disney PhotoPass Photographers on property, which makes it super easy to get photos of the whole family experiencing some of those magical moments that can only happen at Walt Disney World. Some of the typical spots where you'll find photographers include the entrances and in front of the main icons of the theme parks, at most of character greeting spots and character meals, and on some of the attractions. The list of these locations is so long that I'm not aware of a complete, official guide, but I do have a couple lists that might be helpful to you.  
  First, here are the dining locations where 
Disney PhotoPass service is currently available:  
  1900 Park Fare
  Chef Mickey's
  Cinderella's Royal Table
  Hoop-Dee-Doo Musical Revue
  'Ohana
  Princess Storybook Dining
  Spirit of Aloha Dinner Show
  Tusker House  
  Here are the attractions currently participating:  
  Magic Kingdom: Buzz Lightyear's Space Ranger Spin, Space Mountain, Splash Mountain, Seven Dwarfs Mine Train  
  Disney's Animal Kingdom Theme Park: DINOSAUR, Expedition Everest - Legend of the Forbidden Mountain  
  Disney's Hollywood Studios: Rock 'n' Roller Coaster Starring Aerosmith, The Twilight Zone Tower of Terror  
  Epcot: Test Track Presented by Chevrolet  
  You can also find a 
handy-dandy interactive map here on the Disney PhotoPass Service webpage.    
Disney PhotoPass Service is free and available to everyone, but for even more pixie dust, you might want to consider purchasing Memory Maker for your trip.  
  Wishing you a practically-perfect trip, Arlei!  
  Beth