Prince Bueng was getting bored of the festivity, but he has an obligation to attend. As much as he adored his cunning sister-in-law, who made his life easier and happier, he wanted to strangle her for getting into this situation.
The newlyweds were enjoying their honeymoon in the privacy of their royal chamber, or maybe somewhere else, as the new queen has the power to transport them anywhere she wants to go. The father king, the mother queen, and his mother, Lady Claire, were supportive of this. The northern chieftain and Lady Arya went back to the northern fortress after saying goodbye to the new queen and the king.
He was grateful that his mother was accepted by the people when she was introduced. The king himself introduced her, and the people accepted her fully when the new queen hugged her and showed her affection towards his mother in front of them.