When Grayson Soderholm was 5 years old, he spoke Japanese so fluently that it was not uncommon for him to step in as a translator for servers at restaurants and teachers at his school. By the time he was 9, he’d already lived in Hawaii, Japan, and Virginia. That same year, he did what many kids do for their first entrepreneurial venture and opened a lemonade stand in his new home in Flower Mound’s Lakeside neighborhood.