Volunteer at the Credit One Charleston Open January 11, 2024 by Emily Russell Sign up to volunteer at the 2024 Credit One Charleston Open on Daniel Island! Join USTA South Carolina at the Activity Zone. We need help staffing the Welcome Desk (greet guests, check in USTA SC members and hand out a gift) and the Activity Zones (greet families, assist with activities and help clean up). VOLUNTEER WITH USTA SC AT THE 2024 CREDIT ONE CHARLESTON OPEN