Why was there an audience when Prince Louis the 16th and the Princess Marie Antoinette went to bed?

Answer 1

The court of France revolved around many different rituals and ceremonies. One of these was the coucher, which was the custom that the court be present when the prince and princesses of France went to bed. It was considered an honor to witness this. Although it is unlikely that they actually undressed in front of the court - they would be handed nightshirts, and go behind privacy screens or in private rooms to be completely changed into nightclothing, and then return for the rest of the ritual.

On their wedding night, their bed needed to be blessed as an additional part of the wedding ceremony.

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