If you want Mac N Cheese, this is pretty good stuff. My favorite is the Jalepeno popper or the Buffalo Chicken version. Both very tasty. My wife likes the Taco Mac.
Portion size: Honestly, the "regular" dish looks pretty small at first. But it's pretty heavy, rich food. Finish the whole thing and you should NOT be hungry.
Kid friendly, as long as your kids are ok with something that includes real cheese, not the watery blue box mac that my kids like.