I think that otherwise, Children's Week is rather fun. Being the minion of orphans who coax you into irresponsible actions is enjoyable, surprisingly. I love the scripted reactions of the NPCs, particularly Lady Sylvanas. (I'm so predictable.) I do miss taking Salandria to see M'uru, though. Having her rock out with the Elite Tauren Chieftains doesn't have the same impact.
The pets are fun to collect as well. Sleepy Willy is a long-time favorite of mine. I did not try to get all of the pets on alts in preparation for Mists of Pandaria, however. I do think it's a great idea because all companion pets will become account-wide in the expansion. I just didn't make the effort.
What did you enjoy most about Children's Week? Did you meet your goals? What pets did you get?