Badly worded signage

A parking lot sign at Giant Eagle is in desperate need of another clause or some punctuation.

"Expectant mothers and fathers with new born children parking only."

Each time I see it I wonder about that expectant father, or the mother of a new born who is pregnant already, or the adoptive mom with a new born. I'm suggesting,

"Please let customers with young children park here."

A new born is certainly easier to wrangle than a couple of cranky toddlers, and doesn't grandma or nanny need to park close too?