My wife was transiting JNB to come back to the US from Mozambique and as a Platinum she had no access to any lounge (she was flying economy). I thought she was mistaken--that didn't seem possible (we used to always get into the AF lounge)--but she checked with several folks at Delta and everyone confirmed there was no lounge she could get into. We travel to Southern Africa somewhat frequently but will probably not use Delta in the future.