According to park officials, this weekend might not be the last for technical rehearsals on Superman: Escape From Krypton. They say that the park will make it's final decision this week if Superman will host 'extra' rehearsals next weekend and further. Why it's needed would mainly be because of further employee training they said and that's it's been talked about for more previews. It's not set in stone, but time will tell this week whether or not they will.