This reminds me of a family of 13 children from my old chapel. When they went camping for a week every summer, they began to not list a few of the youngest ones. If they did, they’d have to reserve two campsites which were unlikely to be adjacent to one another. They had the two very large tents and a smaller tent for the two oldest boys, and came in a 15 passenger van, so they never exceeded the vehicle or structure rules. After baby no. nine, however, nos. eight and seven were too old to not count, like under age one. Although it was a state run park, the manager was very understanding and allowed them to pay a small fee for campers exceeding the limit of eight persons per site.