I've read this before (twice), but this is genuinely a great book. I think few authors are as observant, critical, and yet still forgiving of human foibles as Jane Austen was.
I probably last read this something like 15 years ago. One thing that I didn't remember from the book (relative to the film) was how long the scene at the end where Darcy and Elizabeth discuss their misunderstandings is. I guess the film had replaced my memory of it.
Actually, on the subject of lost memory, I feel that when I saw the film in theaters 20 years ago it literally ended on Keith Sutherland saying "... send them in, I am quite at my leisure". I thought that was just an incredible end to the movie, not showing the love of the characters but implying it instead. However, when I watched it again on home video I was suprised to see that there was an ending past that scene with Elizabeth and Darcy at moonlight I believe, recounting their love and all that. I much prefer the film ending on Sutherland than the scene of the happy couple being the ending, it is just so confident an end to a film. With that said, the actual "couple at moonlight" ending is actually closer to the book (though incredibly compressed).
Anywho, it makes sense not to have the "remembrance" section of the book in the film, as you literally just watched all those scenes less than 2 hours ago. While it does make sense in the book, as you read each of those scenes many hours (wall clock likely days) ago. Just an interesting example of how certain things in literature are not translatable to film.