Raising bilingual kids

Interesting Japan Times article on raising bilingual kids. The keys are, according to the author:

• First and foremost, raising bilingual children requires "time... monumental effort and perseverance on the part of both parents; and... piles of money"
• Also beneficial are supportive relatives who can host the kids over summer holidays etc.
• And one parent having a fairly mobile job will make it easier to move between countries.
  

Seems pretty doable!