At the top of my head, in Magic Kingdom, there are charging areas in Rapunzel's area, some merchandise shops, and inside the Tomorrowland restaurant.
Hollywood Studios are in some quick-service restaurants.
Epcot is inside the character spot.
Not so sure about Animal Kingdom.
Yes. It is very easy to pull off. I have done all four parks in one day, so two parks is very doable. Just plan accordingly and you'll have a great time.:tigger: