Last time I checked, Barnes and Noble was not a library, adults only, a fancy restaurant, or your personal office space. Please correct me if I’m wrong.
They sell cupcakes and sugary beverages. They have a children’s section and pump fresh oxygen through the vents like in Vegas so if you don’t want kids in the background, I kindly suggest you take your conference calls somewhere else.
If you get eye sores and an upset stomach from seeing kids eat cupcakes with their hands instead of a fork go somewhere that requires reservations and has menus without prices in them.