Why do you do this?
It's quite clear from the article that the family, specifically the nephew, took the photos and put them on social media.
It's in the article you posted
Irma's nephew, John, 22, took to social media to share photos of the royals' visit, adding that he could not believe how the Sussexes were so 'loving and supportive'.
There was no camara crew. PR or publicity.