2.
1. Tokyo Disney Land or Universal Studio Japan
Many attraction and character are there.
2. Sightseeing (in Nara or Osaka)
In Nara, it makes people calm because it is natural.
3. Tokyo Disney Land, Universal Studio Japan, Okinawa (In Summer)
I think they will be enjoy with their children.
4. Roll Sushi (Kura or Akindo)
I think they will eat raw fish for the first time. They will be excited.