You have to go to guest services to turn off your child's card. There is no limit on the cards. When you turn off the kids cards, they punch a hole in the card. Some kids then wear them around their neck on their lanyard or with string. The hole tells the staff that the child can not charge anything.
We turned off our children's cards, but their was a glitch and it didn't happen. Our son "tried" his card at the arcard, even though we had told him it was turned off. When we found out about the charge, the staff apologized for the glitch. We were told that if he had gone to a staff member to charge, they would have seen the hole and known the card was "turned off."
There really is no need for a child to charge anything....everything is free except special drinks, stuff at the stores, and the arcade card.
Tammy