Oh, one more thing. You might want to warn people not to take Anders into the DLC. I can't remember what exactly happens, but I seem to recall Justice freaking out and having to fight him at the end. My Rogue ended up having Anders as the only Mage I always had in the party, so I remember that fight sucking. cost me a ton of healing potions.
I remember shockingly little about that Dragon Age 2 DLC. The guide is fine, though you might want to include something in the "Family Outting" achievement guide about how to ensure that Bethany or Carver survive. Basically, "If you do not have a save file where Bethany or Carver have survived the first act, you must start a new game. When you reach the Deep Roads, either leave them at home, or take them and Anders with you on the expedition." I think that's how you get them to survive (though I never got very far in my Carver playthrough, never liked mages).