Honestly, as someone who's never read any of the books, a lot of the "spoilers" I've read here from the book readers just make me scratch my head. It's like if someone told you the sky was going to turn green tomorrow, but didn't tell you how.
So honestly I'd go so far as to say GOT is typically spoiler-proof. Never mind the possibility that the show will further diverge from the book plot in the first place.
so can we finally talk about that chapter in DoD where Tyrion travels to the ruins of Valeria and uncovers a secret race of dwarves who build him a mecha suit so he can fly back to Westeros and punch his dad in the face?