What time do children have to leave?

It depends on age and which area of the hospital it is. Call JPS and the information desk can answer your question.

Different hrs for differmt parts of hispital ask the nearest nurses station

It's different on different floors. Critical care does not allow children. You will have to call the specific floor and ask.

I don't know. Call the hospital and ask. Probably 8:00 P.M., but maybe not.