OMG they interviewed Lindaaaa about the RW on vulture and she talks as though she's read the books and watched the show
She has tho! Omg! But apparently really recently
Her thoughts on the show:
watching the Red Wedding on TV was actually a lot easier than reading it because they didn’t manage to adapt it as well as they could have. If they had created the same tension on the show that GRRM did in the book, I might have found it hard to sit through the whole episode. But they didn’t, and I watched it without any stronger reaction at all.
This, my completely different reactions to the book and the show—and bear in mind that I was coming to that chapter fully spoiled, so that isn’t where the difference lies— is why I think that it was such a mistake to go for a shock instead of creating that sick feeling in your stomach throughout the whole episode; the true horror of the Red Wedding is as much about the atmosphere as it is about what actually happens. GRRM shifts from fantasy to horror without telling you and starts creating the sort of dread that a horror story would create, the sort of dread that makes you wish for a release, even though you know that the release will be bloody. Here, you start wishing for that release, without realising that you are in for a true horror story ending. That is masterful storytelling and that is damned effective.