Quick update: Work took me through Salem County this morning. I didn't have time to stop anywhere, but I did a brief drive-by of the three spots I know of near the DMB. First, in Pennsville, the OPEN sign for CJ was not on and was covered with a piece of paper. No cars were in the lot behind the building. Next was H & J Spa, which is a couple of doors north of CJ. The OPEN sign there looked like it was lit. Finally, there is VIP Spa on 130 in Carneys Point. The OPEN sign was not lit and there were a bunch of trucks in the lot for the road work being done right in front of the shop.
I did this around 10:30-11:00, so it may have been a little early, but in the past, CJ has always been open, or at least answering the phone, by then. I will send a text and see if I get a response. I don't know H & J's or VIP's usual schedule, so I would think that calling ahead to those places would be the best bet.