Games president Louise Martin said Camilla was "shattered" after a long plane journey and official duties, but denied that she was "tired and disinterested".
Several media outlets leapt on images of the Duchess of Cornwall leafing through a programme during Wednesday's proceedings as evidence that she would rather have been elsewhere.
"Can I assure you that is not true," Martin said. "She was absolutely shattered. She was jetlagged.
"She'd just got off the plane in the morning, was on a full duty right through and the only time she'd got a break was when she sat in a car from Brisbane down to (Gold Coast).
"And then she got 20 minutes to change before she went into another reception and then straight up to the ceremony.
Camilla was a guest of honour at the ceremony -- especially as her husband Prince Charles, the heir to the British throne, had the duty of declaring the Games open.
"She really enjoyed herself. I didn't see the facial expressions, etc, but the comments between the Duchess and Prince of Wales and myself... she was asking questions all the time. They both enjoyed it," said Martin.
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