On September 29, 2021, Princess Marie attended the opening of the National Food Waste Day 2021, held at Timm Vladimir’s Kitchen on Amager. The national food waste day was held for the first time in 2020, and the purpose of the day is to focus on the fight against food waste in Denmark. The date is the same as the UN's 'International Day of Awareness of Food Loss and Waste', which calls on the countries of the world to focus on the prevention and reduction of food waste and food loss.