My partner has a house on the uk coast that he’s rented out it’s now become vacant so we are going to use it over the summer . My son is 12 an only child and we ll need to take a friend with him to keep him amused . My question is what is the etiquette for who pays for the child . We like to do activities which over the course of a week can be quite expensive . I wouldn’t ask for money but if the parent offers should I gratefully accept or turn it down as I’ve invited the child on holiday ?