The couple held the intimate service at their New Mexico ranch.
Patrick, 56, who has pancreatic cancer, wanted to celebrate their 36 years together.
'We did it very Prince Charming and Snow White,' he says. 'I rode in on a white stallion.'
And Lisa, 52, thinks it was perfect.
'It was like a fairytale,' she tells US TV presenter Barbara Walters. 'One of the happiest days ever.'