This tour won't take you to the Joint Security Area (JSA) in Panmunjom. You'll recognize it from pictures as the blue buildings situated on the border between North and South Korea. Going to the DMZ and not going to Panmunjom sounds like a bit of a waste to me. The USO has a different tour to Panmunjom, more expensive than the one above.

FWIW, I went on this tour last year.
http://www.panmunjomtour.com/en/prog..._url=program_1
Pickup location and time was convenient, as I was staying not far from the Lotte Hotel. Guide was nice and friendly. On the whole a great experience.