I'm in a similar situation really, I'll be arriving in Seoul on a Sunday afternoon in September en route to visit my girlfriend's family in Japan and we're planning to fly from ICN to NRT on the proceeding Tuesday morning, and the USO tours don't run on Mondays unfortunately so I'm just wondering which tour to book and how to book it (the Japanese/Koreans don't seem quite as up for e-commerce as we Westerners are).

Could anybody recommend a good tour for me? I really want to visit Panmunjeom and the conference room in particular, anything beyond that is a plus. I know the tunnel is closed on Mondays which is the main reason why the USO do not operate tours on that day but to be honest I don't think my girlfriend would have been too thrilled about that part anyway.