U12 is in the Jim Hudson 9v9. They play a statewide schedule to the US Club soccer league (Carolina's Premiere League) with similar competition (including some of the same teams). That schedule comes out in the next week and I believe it will be in a festival weekend format.
I've heard due to the CsPL, the teams u11 and below dont have a league but will be playing a 4 or 5 festival style weekends with maybe half in Charleston area
I did see this morning the CBSC U11 and under joined the Coastal League. My son plays for MPRD and we were concerned about the lack of teams registered.