Jeff Vespa, WireImage
David, 44, looked sharp in a black tux, while Cathy, a socialite and nightclub manager, wore a knee-length white dress and a romantic up-do. During their walk down the aisle, the couple was joined by their two children, Tim, 8, and Angie, 5.
In addition to his anniversary celebration, the "Without You" creator was also working -- he had gigs on the party island in the days leading up to the nuptials.
Congratulations, David and Cathy!
Kellie Pickler Named 'Dancing With the Stars' Champion
Beyonce Releases New Anthem, 'Grown Woman'
J. Cole Performs 'Born Sinner' on 'Late Night With Jimmy Fallon,' Reveals Competitive Spirit Against Kanye West
Blake Shelton Joins NBC in Organizing Oklahoma Tornado Benefit Concert
Blake Shelton Will Return for Season 5 of 'The Voice'
Toby Keith Returns to Help Family, Friends in Moore, Oklahoma
Toby Keith Says His Hometown of Moore, Oklahoma 'Will Perservere' After Deadly Tornado
Taylor Swift Dominates at 2013 Billboard Music Awards
Black Hippy Release 'U.O.E.N.O.' Remix
Carrie Underwood Says She's 'Queen of Awkward' in Marie Claire Interview