Hotel lasa her power change in the ice rink's Palace, residents can enjoy each other happily and told Anna that they will never close the door at the Palace anymore.
Erza uses her powers to transform the area into an ice palace in the city to be enjoyed together happily. And tells Anna that she will never close the doorway anymore.
Elsa use her power to change the area of the palace, as the ice to the city to enjoy happily. And tell me that you will never close the door Anna palace anymore.