@Krek  
Applejack speaks up her mind and shows Honesty when everypony is convinced by FLim And FLam`s tonic. Flim and Flam will give something to remember them by or as a sign of friendship.

I really hope we don’t get F&F’s redemption. They are characters we love to hate, to keep them viable. They’re decent foils that have plenty of reuse potential, though if they keep being only AJ’s foil, that’ll get old fast.

-Flim & Flam Sing or Dance: I think Meghan confirmed that this episode contained a song, so it’s pretty likely that Flim & Flam get to sing.  
-Rainbow Power Referenced: I have no doubt that this will be AJ’s key episode  
-Derpy Spotted: Eh..who knows?  
-Everypony in the Apple Family says at least 1 line: Depends on whether we’re talking about the Apples that live on the farm or the whole family  
-Journal Entry: Very plausible  
-Flim Flam redemption: Maybe. It could also be someone that was involved in their schemes but regrets his/her decision.  
-Past Episode Referenced: Episode with the return of the two brothers? No-brainer  
-Tonic is actually legit: I don’t know how this would work as plot, but uhm who knows?  
-Granny Smith is oddly: If she’s feeling so much better, than this is not too far-fetched

“Derpy Spotted”
 
No. No Derpy. Not in an Applejack episode.

I’m sad that “Granny jumps something in a vehicle” isn’t in this.

@Krek
 
Yeah I see two possibilities:
 
A: AJ doesn’t want to hurt granny smith’s feelings by telling her it’s all in her head, then realizing that she should tell the truth.
 
B: The tonic really does work and AJ was being dishonest with herself by not giving Flim and Flam a second chance.

Flim Flam redemption for $500, Alex.
 
Oh wait, wrong game. Can I buy a vowel?

>past episode referenced
 
…if they’re bringing back Flim and Flam, how could they not?

What would make Applejack have her Rainbow Eyes moment for this episode?
 
For Rarity, she got hers when need for fame may have costed her friendship.
 
For Rainbow Dash, she got hers when she realizes that she should have stayed loyal to her friends.
 
For Pinkie Pie, she got hers when she realized that Rainbow Dash wasn’t having any fun during her birthiversary.
 
For Fluttershy, she got hers when she realized that in order to help the Breezies, she need to be firm, and kick them out of her home.
 
I’m guessing for Applejack, it’s possible that the tonic is merely a placebo effect for Granny Smith, but Applejack doesn’t say anything, since that may harm Granny Smith with the truth (in her mind, anyway).