The Duke and Duchess of Cambridge's Royal Tour of Pakistan is one of the "most complex trips ever" , so it's hardly surprising they decided to leave their children Prince George, Princess Charlotte and Prince Louis at home.
A huge security operation involving 1,000 police officers will be on hand throughout the five-day visit, which has been organised to highlight the close cultural ties between the two countries.
Even though the couple have a nanny and a team of staff who could have looked after their children while they're away, Kate's parents Carol and Michael Middleton have stepped in to babysit.
Kate and Wills reportedly arranged their flights so they could still do the school run as normal.
George and Charlotte are both at school, so will be there as normal in the day but little Louis will need full-time care.
According to royal correspondent Rebecca English, they will be "helping to shoulder childcare duties" during the week.
Carole and Michael are big parts of their grandchildren's lives, and often to take them out and about.
Over the summer we saw them take George and Charlotte on a boat trip to watch their parents go head to head in a charity sailing race.
Kate and William arrived in Pakistan yesterday evening and have a packed schedule of engagements today.
Speaking ahead of their tour, a senior royal aide said: “What happens in Pakistan matters on the streets of the UK. It’s one of the most important relationships that the UK has.”
They will visit Lahore, the mountains in the north and regions bordering Afghanistan.
But the precise locations will not be made public until the day of visits for security reasons.
Their trip, at the request of the Foreign and Commonwealth Office, comes during heightened tensions between Pakistan and India over the disputed region of Kashmir.
