We are going to make a reservation for Izumi for our family of three. Our son will be five years old. It says that 0-5 are free but must order from the kids menu. When I include him on the reservation, it charges us for him. Do we just make the reservation for the two adults and just take him with us or does he have to be included on the reservation? If he has to be included, how do we add him without being charged?