i'm a member at james creek. they have 4 indoor hard courts, 6 outdoor hard, 2 clay. good kids academy...lots of adult drills + some adult teams. not sure the latest.
i recommend you check www.altatennis.org
. this area of town (suwanee, duluth, cumming, john's creek) has a lot of teams. if you dont know anyone, you can post 'player looking for team' on alta and usta websites.