Yes, @grumppa, Hollywood saccharine applied at the end.
And the costumes were all wrong, because at the time Hollywood couldn’t allow even a glimpse of cleavage. ?
IMO (as an ardent fan of the book) one of the best bits in the BBC version was the scene with Lizzie and Lady Catherine in the garden. I thought the actress who played Lady C (forget her name) was brilliant, and portrayed her correctly as a ghastly and very imperious old bat.
My one complaint about the BBC version is that they omitted Mrs Bennett’s stunned monologue towards the end of the book, when she finds out that Lizzie is going to marry Mr D. A comedy classic IMO, ending IIRC with, ‘Oh Lord, what will become of me? I shall go distracted.’