No, you cannot currently have a traditional "Meet and Greet" with Elsa at Magic Kingdom; her permanent home for photos and autographs is the Royal Sommerhus in the Norway Pavilion at EPCOT. While she does not have a designated meeting spot in Magic Kingdom, you can still see her in the park during the "Festival of Fantasy" Parade, where she and Anna appear on a stunning Frozen-themed float. She also occasionally appears in stage shows in front of Cinderella Castle, such as "Mickey’s Royal Friendship Faire." If your goal is a one-on-one interaction and a photo, you must head to EPCOT, where the sisters meet together in a single queue. For a more musical experience, you can also see Elsa "let it go" at the Frozen Sing-Along Celebration in Disney’s Hollywood Studios, though that is a performance rather than a personal meeting.