I'd lik to spend some time there myself at some point; maybe a year or so. It's certainly on my bucket list. And I need the Tokyo marathon to complete the Majors.
Alternatively dump your daughter at the grand parents and take me instead. I'll need entertaining and constant attention on the flight but I do know some fun places once we've landed.
I've been twice, once for a week and the second time was a bit longer. It's a truly fantastic city and a veritable experience. Whilst I hear dazzer6666 my gut feeling is if such an opportunity arises take it. The better to regret the things you have done cliche comes to mind. You might struggle...