The official website of World of Warcraft has announced that Children's Week takes place from May 1st through May 7th.

Celebrated by both the Horde and the Alliance, Children's Week is a time for the heroes of both factions to give something back to the innocents of war: the orphans!

Sightseeing

All orphans wish they had someone to show them the wonders of the world. Throughout the year, they spend their time wandering around their home cities of Stormwind or Orgrimmar, dreaming of the day they'll be old enough (and big enough) to venture out into the world alone and see the sights their parents would have shown them. During Children's Week, though, brave adventurers for the Horde and the Alliance can make these kids' dreams come true! To help these kids see the world, all you have to do is visit the orphanage for your faction. Talk to either Orphan Matron Nightingale in Stormwind (Alliance) or Orphan Matron Battlewail in Orgrimmar (Horde). After that, you and your young friend can adventure together across Azeroth! Below are some of the places and people the orphans want to visit:     
  
The bank in Darnassus (Alliance)
The lighthouse in Westfall (Alliance)
Jaina Proudmoore in Theramore (Alliance)
Mor'shan Rampart (Horde)
Lordaeron Throne Room (Horde)
Cairne Bloodhoof in Thunder Bluff (Horde)
 

Pet Rewards

After you complete your adventures across the lands of Azeroth, bring your young friend back to the orphanage. He will then be so thrilled and grateful that he will offer you one of his favorite pets to remember him by! 

Children's Week in Shattrath 

Victims of war in Outland, the orphans of Shattrath's Lower City also need company and adventure. Talk to Orphan Matron Mercy to offer an orphan the adventure of a lifetime as you take them travelling across Outland and learn a little about your ward along the way.

The outcome of the ongoing battle against the Burning Legion may one day lie in the hands of these children, so a little encouragement, or a push in the right direction, could make all the difference. Prepare yourself for answering all those tricky questions that children ask, as you show them the sights of:    

 
The Dark Portal
The Exodar (Alliance)
Silvermoon City (Horde)
Caverns of Time
... and meet some unexpected people along the way 

And while doing a good deed is a reward in itself, there's something special waiting for you back in Shattrath to help you remember your orphan friend throughout the year ahead.

For more details please visit: http://www.worldofwarcraft.com/info/events/childrensweek/