Usage patterns
〈事〉が和やかに進むfor a meeting or event to proceed in a friendly, relaxed manner
The meeting proceeded in a relaxed, friendly manner and finished earlier than planned.
和やかな雰囲気a warm, friendly atmosphere
The party took place in a warm, friendly atmosphere.
和やかに話すto talk in a relaxed, friendly way
The two of them enjoyed their meal, chatting in a relaxed, friendly way.
和やかなムードになるfor the mood to turn warm and friendly
The discussion was tense at first, but the mood quickly turned warm and friendly.