>>95319210A few things
Oaken and his family have a big dance number where they're nude except for leaf fans.
Kristoff is kind of a dick and Anna is dumb, not in the naive way like the film but in a literal "what is wrong with her?" way. Kristoff literally pushes and pulls Anna around because she's so stupid she can't manage to do anything on her own. She doesn't even think of buying winter clothes, and Kristoff berates her for not being prepared and tears her clothes off (she's not nude, but still) and makes her put on one of his old outfits.
Olaf has to tell her to call for help after Hans abandons her because she doesn't think of... calling for help.
She doesn't save Kristoff a few times like in the film but he saves her. She saves him once by accident. She's constantly getting distracted by things--someone who saw a preview said they gave her a line like "ohh, shiny!" and Kristoff literally has to remind her that she's trying to go save her sister.
There's barely any added interaction between Elsa and Anna. In the finale scene, after Anna is unfrozen, Anna says 2 lines to Elsa then runs over and joins Kristoff.
There is no final moment where Elsa learns to embrace her powers positively, like in the film where you see her being embraced by the kingdom and making an ice rink. Elsa, like Anna, doesn't really accomplish anything. She doesn't learn to fight against her fear. She doesn't attempt to fight against Hans&co and in fact sings a song about how she's given up and death would be better, all while wearing a white shift gown similar to ones you associate with women being executed in historical movies. She doesn't escape her cell on her own, it's accidental. Etc. Basically any agency Elsa and Anna had in the film is given to other characters.