Pinkie Pie throws excellent parties. This is a fact of life, like Fluttershy being rather demure, or Rarity having a sense of style. But the fact is, Pinkie's parties cost bits, and her job at the bakery isn't supporting her passions anymore. So she dusts off her degree and opens a side business...

The trip back to Ponyville from the middle of the desert is long, leaving one with plenty of time for their thoughts.