We saw it last night and enjoyed it greatly. By the end, I was amazed all over again at the wonderful, rich, inventive, complex world that JKR created.
Funny, my dc were more critical than I, but they have a better memory for the details from the books. DS was particularly scathing about the need to compress events and skip others. He disliked all the bad exposition (his words) that was used to explain things to the audience - in the scene with Harry and Dumbledore, for example. It was DD's second time seeing it and she cried a lot, but said she cried even more the first time.
There was a lot of laughter when Voldemort hugged Draco - from my dc and others in the audience. It was awkward. We cheered for Neville and McGonagall and the others. It still bothers me a little that Molly takes out Bellatrix Lestrange, since I think Neville should have done it by rights, after what she did to his parents. I suppose JKR wanted to give him the honour of destroying a Horcrux, so I guess it's okay in the end.
My kids wanted the final battle between Harry and Voldemort to take place in the Great Hall. They also thought it was too bad that Harry didn't use the Elder Wand to heal his own wand and then returned it to Dumbledore's tomb, but I guess that would have taken too long for the movie.
We all agreed that the movie should have included the final battle scenes from the book where the house elves and centaurs joined in the fight. DS pointed out that JKR wrote that scene to signify unity against the hatred, ethnic cleansing and class prejudice from Voldemort and the Death Eaters. By eliminating it, the film-makers missed the message - a little like the way the final LOTR movie missed the point of the Hobbits' resistance against enslavement and evil.
I think I'd like to see the 2 final films together. I recall the first part seemed slow and endless, although I liked it - especially for some odd reason, the off-beat scene of Hermione and Harry dancing. (I think Radcliffe and Watson had a nice chemistry, whether JKR intended Harry and Hermione to be just friends). The second part seemed like a freight locomotive of action in comparison. I'd like to see how they work together as a whole.