...Yea, I'm burned out as hell, i'll edit this later.
Writing:8.5/10
Humor:9/10
Moral/Purpose:8/10
Overall:9/10

There was much silliness in terms of the cheer they were practicing, and on a train nonetheless. Still, things got ironically funny once I realized they clearly picked up the wrong person. I was pretty much "this can only go badly". I think I found most of the humor just coming from them greeting and treating Chicken Lilly (made up fanon name. Will change according to what the fans come up) like royalty.

Rarity got her moment, albeit a very minor role. At least we know that not even Rarity can cut corners and expect something to come out well.

It's a good thing the inspector was very understanding. Her initial grumpy look was probably just her having a bad day. I do still think though, they spent a little too much time showing the first pony around. The implied transition though helped.

Funniest things were probably the slapstick comedy on behalf of Dashie, and Shining Armor apparently learning the Royal Canterlot Voice. Other noteworthy humor was just the chicken cutie mark Pony going being incredibly claustrophobic.

8/10 from me. The story wasn't too special, but was made up with the dramatic irony. I also felt only Twilight and Dash were the ones with the biggest speaking roles. Pinkie was mostly there for gags. A bit of points off, because the moral has pretty much be squashed at this point.