This episode reminds me of the draft... too early to grade. If the changes pay off later in the series, then this may be one of the best episodes to date. However, if they don't pay off then it could easily be the worst.
Top to bottom there were too many differences to mention them all, but the attack on Joffery's entourage in Flea bottom was a awesome. Lollys really isn't a character in this, so her rape might not get mentioned, although the Priest having limbs ripped off by a hoard of zombie-like version of Kings Landing's 99%er's was pretty shocking. That was one of my favorite moments from the book, and it was pretty great in the show. Dinkledge slapping Joffery again was fantastic.
Yeah, the thing with OSHA had to happen because the Reeds don't exsist in the show, and she's their way out. No biggee there. It's just a catalyst for what happens next. Oddly, they're taking a completely different path to get to Reek and Ramsay the Flayer but I see where they're going. It will work. I didn't like that Sir Roderick's battle wasn't included, but whatever... his death was fittingly tragic. I'm a little surprised that Luwin was still alive.
I totally do not remember Littlefinger showing up in Harrenhall in the book like he did in this episode. It might have happened and I forgot about it, but I was pretty surprised when he showed up. The scenes with Arya and Tywin are so good that I don't mind them adding extra.
It looks like Jenny Westerling... or whatever her name is in the book is now this feild nurse lady. Seems odd, but whatever. It all works to the same effect I suppose.
The thing with the dragons getting stolen is a total shocker. The only thing I can think of is that they're making new stories for Dany to keep us engaged in what's happening with her. I can't blame them for that. Her storyline does get pretty scant in the book. It seems all a little odd, but like I said before, it might work out for the best TV-wise, or else we'll all hate it if it doesn't. I guess we'll see how it plays out. I'll resevere my judgment on the changes for now, and enjoy what went really well in this episode.