Complex sentence: Her first official appearance in Paris on 8 June 1773 was a resounding success: she and the Dauphin were acclaimed throughout the day with climax taking place at the Tuileries before their return to Versailles.
Split into simpler sentences: Her first official appearance in Paris on 8 June 1773 was a resounding success. She and the Dauphin had been acclaimed throughout the day with climax taking place at the Tuileries before their return to Versailles.