A couple of things I disagree with there!
They now have school fees for both children and I think their security has been rumoured to cost 5 million a year?
The 'rumoured 5 million' refers to round the clock high level security. Given the amateurish look of their security doods, batting away random passersby just going about their day on the streets of New York, I doubt they're paying that much.
I presume they also have quite a few staff to help with all the different aspects of their lives
Again, given the shambolic nature of their lives, I doubt they have much by way of 'staff'. Housekeepers and nannies, yes, but that's pretty standard for even 'ordinary' wealthy people.
They also have a house in Portugal which must eat into their annual outgoings
No evidence that they own a house in Portugal.