The Dunres Resort is located at 333 Blue Star Hwy. in Saugatuck.
The event takes place between 1-4 p.m. Garrett and Branson will mingle with the guests, pose for pictures and distribute giveaways.
There will also be a DJ.
Later that evening, the duo will make another appearance at 11 p.m., where they'll dance on the bar and mingle with the crowd.
For more information, email PR@COLTstudiogroup.com.