Don't run Icewind Dale without this!
This package is so incredibly worth the price. The Icewind Dale module has a lot of places where the campaign can easily go off the rails and this package gives out expert advice on how to keep the game on track and make the story more exciting. I'm so glad I bought this.
I also bought Arctic Survival House Rules for Icewind Dale which I also highly recommend to give Icewind Dale a much harsher battle against the elements feeling to it. I needed to modify the rules presented in that PDF though, the conditions were a bit too harsh for my players liking.