What is a sentence for conviviality?

His conviviality indicated that he was in complete denial of how likely it was that he would be found guilty and sent to prison for many years.

The conviviality of our family dinner helped me forget how upset I was over being dumped by my boyfriend.

She always had an air of conviviality about her, but it was only a mask she used to hide her sadness and despair from other people, and from herself.