On top of the unexpected-but-no-less-welcome return of Cheese Sandwich, this was one of Pinkie Pie's best outings. In fact, it's the best one she's had for three seasons. At first I was confused about her desire to find her life's purpose because I thought she'd already achieved that, but on rewatch, I can see it now since all she does is throw parties, hang with friends, laugh, and bake.
I forgot how funny Cheese's "lost cause" joke was at the end. Some may not have found that funny, but at least it wasn't overdone.