You’re a good parent. You take every opportunity to expose your children to all the widely varied cultural events your city offers up, and that new musical version of Mary Poppins seems like just the holiday treat your kids could really sink their teeth into. One problem: you live in New York, where Broadway tickets can run $250 a pop. Furthermore, your kids are, well, kids, which means that they’re unpredictable, and a $2 tantrum could well wind up ruining your thousand-dollar evening out. So answer me this: you feeling lucky, punk?