Originally Posted by MSPeconomist

Be aware that you need to book the JSA tours in advance, although sometimes hotels can get last minute reservations for DMZ only. Also, whenever tensions are heightened, the tours are cancelled, so I wouldn't be optimistic about being able to see the DMZ/JSA in late August.

ADDED: If one of the airport buses from ICN serves your hotel, I highly recommend using it. Don't try to take a taxi. Most of the buses are luxurious and the rest are clean and comfortable. It's door to door service for a very reasonable price with no worries about traffic, etc.