MYRTLE BEACH, S.C. (WMBF) – The Coastal Grand Mall is implementing a new policy as they deal with a “rising number of unsupervised youths” hanging at the mall. Starting on Feb. 23, the Youth Escort Policy takes effect, requiring all visitors under 18 years old to be with an adult who is 21 or over on Fridays and Saturdays after 4 p.m.