There is no train from AC to points south. there are tracks from camden to ocean city and Cape May. seasonal trains can work
http://www.maineeasternrailroad.com/Pages/train.html
and perhaps something along these lines woudl be preferrable to an NJT train. I also think that these trains should terminate in Camden, not Philadelphia. People can take PATCO, the RiverLine, or drive to Camden. NJT should upgrade the AC line track for shorter trip times.