Yes, they will get it for Christmas, bypass all of year One in a heart beat since Bungie made that entire portion of the game irrelevant for some reason, and be Level 40 within 2 days. From then on, they will do King's Fall, beat it, do hard mode, be dissatisfied/disappointed. The entire game can be played out within one week... All there would be left to do is Crucible, Crucible, and more [i]fudging[/i] Crucible.