Taylor Grooms told WCSC the group had gathered for a friend's 30th birthday party. Grooms said he was about to take a photograph when the dock fell.
“We were getting lined up, and all of the sudden we heard a loud crack,” Grooms told the television station.
Grooms said it was fortunate it was low tide.
"It could have been much worse," he told WCSC.
The restaurant's owners could not be reached for comment, the Post and Courier reported..