I have Kingdom Hearts and I absolutely love it. It never really seems to be "overly kiddish." I also loved the fact that you can go back and say "hey, I remember this character!" And I can't wait until I get to the Nightmare before Christmas world.
Your co-worker is an ass, he shouldn't have been obnoxious and gave his own opinion on the game, I mean, you're trying to sell a product to the lady!
