Astrid & Apollo and The Soccer Celebration by V.T. Bidania
From Picture Window Books:
At the Hmong July Fourth Soccer Festival, Astrid and Apollo are excited to join their dad as he watches his favorite soccer team compete. But when they have to babysit their little sister, Eliana, too, they don't know what snack she keeps asking for. To keep her from crying, they buy almost everything they see at the festival. Will they end up with a whole stroller full of yummy food?