According to the Telegraph, Prince Charles has said he will not be attending the Olympics in Beijing, while indirectly implying it is because of human rights concerns:
The Prince made his decision known to campaigners for a free Tibet, who had been calling on him to show solidarity with those who believe the Games risk obscuring China’s human rights record.
He gave no reason for his decision, and neither did he say whether he had received a formal invitation.
… “As you know, His Royal Highness has long taken a close interest in Tibet and indeed has been pleased to meet His Holiness the Dalai Lama on several occasions,” a letter, written to the Free Tibet Campaign by Clive Alderton, the Prince’s deputy private secretary, said.
“You asked if the Prince of Wales would be attending the opening ceremony of the Beijing Olympics in 2008. His Royal Highness will not be attending the ceremony.”