Just saw it, I really liked this one! Much better than New Moon and Eclipse. (The first one is special...) Way better acting both from Kristen and Robert, especially Kristen! and I didn't find it cringe worthy. (Ok, maybe a few scenes) Better wardrobe for all of them, better makeup, and Rob finally looked hot as Edward again. Kristen looked beautiful in the wedding, and the dress fit her like a glove.
They were really sweet and adorable during the honeymoon imo. I found myself going 'awww' while watching, and chuckling. I don't know how much I can say, in terms of spoilers etc etc, so I'll stop. But I think they good with this one, and I'm actually looking forward to part 2.
And as for the nipple slip, I IMMEDIATELY saw it, hard to not see imo, lol. I think I saw it twice? Haha.