For 2018 and beyond, may I use 529 funds to pay for my sons before and after care (both are K-12)? May I also continue to put 5,000 into FSA for the before and aftercare?

With the next tax law, i am trying to understand what i can use the 529 funds for.  I believe i can use them for K-12 before and aftercare for both my sons, as my wife and I both work.  Prior to 2018, I contributed 5,000 annually into a FSA to pay for younger son's daycare and now that he starts Kindergarten this September, I want to see if i can continue having an FSA in addition to using the 529.