I was hoping to do the pizza by the slice when we went last January, I didn't know it was only a seasonal thing.
Not so sure I would want to bother if it's not the same pizza that is in the restaurant.
Seems to be (from photos) a thicker-crusted, rectangular cut "Sicilian" style instead of the Neapolitan style served inside. The outside area has its own oven. It's definitely not the same as the woodburning ones inside.