If you buy from Turbine, it won't send you a code. When I pre-ordered Helm's Deep, and bought other expansions it was directly added to my account because it had me sign in before purchase.
Originally Posted by Dolthafaer
Though, if you are buying from Amazon however, if they send it a code I am sure it would be 1 single code that would give you all four expansions.
If I am wrong about the Quad Pack (due to me never purchasing it) someone else can help.
Disclaimer: I am only assuming about the Amazon part, so I will state that. Do not take that as fact. I am sure someone can give an answer.
The mind twists and bends to shake the horrors of life
The mind, keeping it's sanity, bends so far that it snaps in two.