Several differences from the books, and only a couple were not great. The main one being that I would have liked Thom Merrilin to be with the boys a little longer.

spoilers:
Just to build up the relationship between him, Rand, and Mat a bit more. So that when we see him again, its that much more impactful.
end of spoilers

Overall though, I liked it. And finally got to see Nynaeve not only channel, but heal. The Tinker sub plot here, just doesn't quite feel as impactful as the book version. Its not bad, just missing a certain air to it that the book had.