One would think, Eleanor would take her to some fancy high end place for kids where she could enjoy without worrying about safety but Kayla's grandmother suggested that Eleanor was thinking too much. In a place where there were countless kids running around while their parents followed them always keeping an eye on them, who would care to stop and look at Eleanor?
There was no need for her to hide behind her mask all the time worrying about getting recognized. They just needed to dress 'modestly'. It was so that others' wouldn't think that they were from wealthy family and could easily blend in with the crowd.