Princess Anne was President of Save the Children between 1970 and 2017 and is now Patron. She was well known for turning out to events when invited so in that regard was responsible for many donations. If she was going to attend an event, more people would come and it was much easier to sell tickets because of her presence.
There is an encomium on the SC website detailing the nature of her work with the charity.
Is there such a thing as delicious ready meals?