How do you keep a 9 year old happy, walking and sightseeing daily hours on end for a fortnight? By bribing of course!
Exhibit no. 1 : sugar bribe.
Not just any old thing. For this boy, it's Daido's Ultraman and Kamen Rider drinks.
Worked pretty well in previous years too.
Of course, a bribe is only effective if used sparingly and wisely. You can't be bribing left, right, center!
For Son - one sugar bribe a day. That's the limit and usually handed out when the energy level was way low.