I work out patient surgery so were talking minor surgical procedures on basically healthy pediatric patients.
For the sake of argument we will be magical nurses and KNOW the child is not in pain or having other medical issues in PACU.
Some nurses blame versed given in pre-op or OR if the pediatric patient is cranky, crying, inconsolable, acting out, in recovery. We do let parents back as soon as possible, this can happen even with parents there. The nurses think versed makes the child feel more disoriented, out of it "yucky". They hint to anesthesia that they don't like pediatric patients to get versed.
It is not automatically given to every pediatric patient, depends on the child, the case, etc.