Is it permissible for volunteer administrative board members of a sports and cultural club to register their children for free or at a discount in the summer children's club, which costs 200 dinars?

If the club's regulations permit the registration of your children free of charge or at a discount, or if the authorized officials approve it, then there is no harm in it for you. However, deception or exploiting one's position to achieve this in violation of the club's rules is not permissible.