Walt Disney’s shares were up 2.3 percent at $113.60 in premarket trading on Tuesday. Revenue at theme parks rose 6 percent to $3.76 billion, pushing up the unit’s operating income 24 percent, as ticket prices and hotel room rates increased and visitors spent more on food, drinks and merchandise. Walt Disney’s media networks business, which includes sports powerhouse ESPN, the Disney channels and ABC, reported a 13 percent rise in revenue to $5.81 billion.