At the end of the visit, the king and queen spoke with the press, as they used to do when they were crown prince and princess.
He spoke about the use of state visits and about his admiration or South Korea. He says that the visits are important for the long-term contacts. Apparently the SK government was pleased with the visit. They already invited Q. Beatrix, who never came. He also discussed Dutch topics like the MH17 crash, the costs of the palaces and the Black Pete debate (he didn't voice an opinion about the latter, quite rightly so as it has become a wasp nest).
The queen became somewhat emotional when she discussed a mother who lost two children on the plane. The queen didn't want to comment much on Pss Masako as she considered this private. She did say however that it is always special to meet the CP'ly couple. The king said that he could describe the emperor as a sweet older uncle. The emperor referred during his speech to 1979, when the mepror visited Castle het oude Loo, when WA followed the emperor -who was driven in a carriage over the estate- on a pony.
He defended the Japanese court protocol. Many journalists complained about the strictness of it, butte king defended it as part of Japanese culture. As Hans Jacobs notes: of course he could not do much else, if he would agree with the press the head lines would be 'the king attacks Japanese court' , or something similar.
Sources: royalblog.nl and royalty-online.nl