Charles drinks some sort of liquor, and has another while Elisabeth undresses, and another even later. People drink at a party. I know I do. Charles, Elisabeth, Connie and John have wine with dinner. Charles and his father have drinks.
People have wine at a dance.
Charles' father has another drink. Some may see the initial child-bearing liaison as having some of both. Louisa is a spoiled child and is constantly rude and demanding to Elisabeth. She tells her that she hates her, doesn't have to do what she says, and in one scene, throws plates of food across the room where they shatter against the door. Some may see Charles as having some of both for never disciplining Louisa.