Looking for our 2010 Winterveil Guide? You'll find it here!
Winter Veil is one of the more immersive and fun holidays that World of Warcraft offers over the course of the year; it grants you the chance to ride something a little "different," turn into a snowman with a cute /dance animation, and receive gifts containing noncombat pets if you've been good and Coal if Santa RNG thinks you've been bad.
Before anyone asks, Winter Veil runs from Tuesday, December 15th to Saturday, January 2nd in 2009/2010, and this is article is about what you'll need to do in that period to complete the meta (and earn the title) Merrymaker. Unlike November's holiday, Pilgrim's Bounty, Merrymaker is required for the yearlong meta What A Long, Strange Trip It's Been, so don't slack on this one if you want that violet protodrake!
Saving Metzen for the achievement On Metzen! is a short but fun questline that starts with an NPC in front of the Ironforge bank (if you're Alliance) with Metzen the Reindeer, or an NPC in front of the Orgrimmar AH (if you're Horde) with Metzen the Reindeer. The quest ends in either Searing Gorge or Tanaris, whichever is more convenient to you.
Either zone you hit, try to do the Metzen quest first, as you'll need rewards from it for two of the following achievements.