Heming, 44, shared footage of the ceremony on Instagram showing herself walking down the aisle barefoot with her daughters 10-year-old Mabel Ray and eight-year-old Evelyn Penn as flower girls, while Bruce's daughters Rumer and Scout played the guitar and sang.
Heming said: "On our 10th wedding anniversary we decided to renew our vows in the same place we said 'I do' back in 2009. I’m so happy we did. Seize every opportunity to unite and celebrate with family and friends. Those are the moments and beautiful pockets of memories that you get to hold on to for a lifetime. And we get to keep those memories safe and alive for the ones that might not be able to.
"A big shout out to our videographer @demimoore, our wedding singers @rumerwillis @scoutlaruewillis and our two flower girls Mabel Ray & Evelyn Penn @stevoeads for marrying us, again. And to our sweet family and friends for always showing up for us."
Willis – who has been diagnosed with dementia – wore a white shirt and trousers, sandals and a panama hat while Heming wore a floaty white sun dress with a fine, floral pattern.
After exchanging vows Willis and Heming shared a kiss to rapturous applause from their family and friends before he threw his hat to the crowd.
Watch: Bruce Willis celebrate his 68th birthday with family
Daughter Mabel then ran and jumped into his arms.
The couple married in the same place in 2009.
Willis previously married Moore, 60, in 1987, and the pair separated in 1998. They are parents to daughters Rumer, 34 Scout, 31, and Tallulah, 29.
The Fifth Element star's family announced in February 2022 that he was retiring from acting because he had been diagnosed with aphasia, a neurological condition affecting speech and communication.
A year later they confirmed he had frontotemporal dementia (FTD).
The family said in a statement that the "continued compassion, understanding, and respect" of fans would "enable us to help Bruce live as full a life as possible".