Thanks, you guys.
Now some of you may notice that I gave the TS/AJ relationship in Winter Wrap Up a detailed analysis of it's subtlety in showing that the two ponies' friendship didn't become strained after this episode. Well, that's because there's a subject I've been meaning to bring up.
So, it's been established that Ponyville was founded by Earth Ponies, right? Then it's revealed in the episode Family Appreciation Day that Granny Smith was the one who founded Ponyville, which means that the town's entire existence is all because of Applejack's family. Basically, what I'm getting at is that after you watch both WWU & FAD, it's really incredible that Applejack easily forgave Twilight for not only breaking a town event's sacred rule, but also one that was established by her own family. Hell, it's amazing that Applejack was even willing to give Twilight a second chance when the latter offered her organizing skills to help the town and didn't respond with something like "I think you've helped enough for one day, Little Missy". I guess that just shows how strong their friendship is.