When this episode aired Derpy stole the show and then there was the big controversy. I watched both versions and both voices were good but I'm sure we all like hearing her name. She's had I don't know how many voices since.
The thing with the cherry sorting was a famous scene from an I Love Lucy episode.
And Cherrychangas were invented in this episode. http://cookfiction.com/recipes/cherrychanga.html I've made them. They're delicious.
Unfortunately I think the story of this one is kind of a mess. Was Applejack planning to never come back? Nopony thought to ask her that. She wouldn't just abandon her family and her farm.
And the promise was the kind of thing a little kid would think was sneaky. Saying "I'll tell you at breakfast" is a promise to come to breakfast and tell them.