Hi Lisa,
Anyone can use the regular PhotoPass card where ever there is a PhotoPass Photographer. They are not everywhere which is why I usually suggest bringing your own camera as well. PhotoPass Plus will allow you to obtain a digital file of all your PhotoPass photos and participating Attraction Photos and Character Dining Photos taken in a 14 day visit to Disney. The participating attractions are Space Mountain, Splash Mountain, Buzz Lightyear's Space Ranger Spin, The Twilight Tower of Terror, Rock 'n Roller Coaster, Expedition Everest, and Dinosaur. The participating Character Dining Locations are 1900 Park Fare, Ohana (breakfast only), Spirit of Aloha Dinner Show, Chef Mickey's, Cinderella's Royal Table, Tusker House Restaurant (breakfast only), Hoop Dee Do Musical Revue, and the Princess Storybook Dining at Akershus Royal Banquet Hall. You will receive a PhotoPass Plus card and lanyard, a gallery CD with 400 photos of Disney, a code to create and order a PhotoCD with all your photos online, Print Packages at the above restaurants, and digital downloads of the above attractions. You can still use regular PhotoPass cards and add them to your account. I hope this clarifies things, Lisa! Please let me know if I can help you further!