No, Sora was dancing with his Aunt. He planned to snatch up his Mother after this. There was no telling what would happen to his parents during the invasion. It could be his last dance with his Mother ever.
Kairi smiled. She would LOVE to dance with her soon to be brother in law! "Certainly!" she said, rather enthused. She placed her hand in his and picked up her skirt a little. "I was hoping you would ask!" So she wouldn't have to go drag him onto the floor herself.
"Have you been enjoying the festival, Riku?" she asked, placing her hands correctly once they were on the floor.