No his Grandad always taught him to realise the value of money. He can go back when he’s earned enough himself to pay for itJust about to put that. iirc he wasn't paticularly enamoured with Kampala either.
I'm sure his Dad would pay for the once in a lifetime opportunity.
In fact do it, and I'm sure his uncle will go halfies with you
Unless his Uncle has more money than sense and pays for it as his last 24 Christmas presents he’s forgot about....