The Norks are already claiming a huge propaganda victory while the White House is saying the kwtow is purely a "personal visit". There is, in fact, no such thing as an actual "tourist" to the secretive cult-like nation. Everyone who visits is watched, tightly controlled and allowed no freedom. Their entire experience is choreographed for propaganda reasons.
A recent article described the execution of a woman for spreading out bible tracts. Her parents, husband and young children were sent to a concentration camp/prison. This sounds horrific, but it is common in N Korea. In fact the entire nation is a giant prison and Pyongyang is where they keep the 'trustees'.