It's the amount of food eight kids get through that has surprised Serena Coe the most.
She's marshalling hotdog rolls on plates, giving each a lick of butter from the kilo tub before moving to the next. An enormous bottle of ketchup sits on the bench, ready to be slathered across the bread.
Finding a meal everyone likes is a tough job, and there's no time for arguments tonight. There's a school PTA meeting to get to, squeezed into the schedule of dinner, homework, laundry and bed.
School visits, spelling lists, feeding a table of 10 – a few months ago, Coe and her husband Sam Tupou didn't have to think about any of these things.