McDonald's.

serving the customers and making sure they get there pizza on time

that is hard to answer as there are so many fliers but I would say more than half as there are so many fast-food restaurants.

YES. Food, beverage and restaurant companies spend almost $14 billion per year on advertising in the United States (Rudd Center 2017 analysis of Nielsen data). More than 80% of this advertising promotes fast food, sugary drinks, candy, and unhealthy snacks.

Too true about advertising and food choices with kids, a meal at your local fast food place promises fun, cool items, and instant popularity when you share your fries.