Group 1 - Fatburger is celebrating National French Fry Day with a week-long promotion offering free Fat or Skinny Fries with any online burger or sandwich purchase from July 9 to July 13 [1][2] - The promotion emphasizes the importance of fries as a staple side dish, highlighting their quality and pairing options with various burgers and milkshakes [2] - FAT Brands, the parent company of Fatburger, operates 18 restaurant brands and has over 2,300 units worldwide, indicating a strong market presence [4] Group 2 - Fatburger has a legacy of over 70 years, known for its custom-built burgers and a loyal customer base that includes celebrities and athletes [5] - The restaurant chain focuses on providing a contemporary dining experience while maintaining high standards of quality and taste [5]