Pinkie Pie has always served admirably as Element of Laughter, and it's time for the princesses to show their appreciation. In fact, they have a special assignment, something they've never tried. It will be the best surprise she ever had.
Once it was nothing more than old concrete and forgotten hallways. Then it became a haven for the fugitives of the everlasting war that raged between the different races. He was the janitor, always.