Man, you think all this prison stuff is gonna be all grim and rough and then bam, the One Piece kicks in! Seeing Luffy and Kid go all out was delightful, and it's a great way for them to build a rapport.
Didn't catch Caribou in the prison at first, but cool that he's gotten there too. Anime watchers are gonna be a bit confused as to how he got from Fishman Island to a Wano prison, but oh well, if Toei didn't explain Jinbe's Poneglyph then they're not gonna explain this (even though I love his cover story and want to see it animated ;_;)
Oda just keeps topping himself with the SMILE user designs, and I wonder how anyone is gonna top Dobon. Having a character's legs be the bottom lip of a hippo is not something normal people think about...
Overall, an absolute classic. Perhaps my least favorite part was Nami's scene, perhaps it was a bit overdone, but I would prefer that over a super serious spy montage.