One thing I noticed is that whenever they are at a gallery or some other cultural event the only thing they do is just stare at the paintings! Given that in interviews they have the luxury to know the questions before I would expect them to promote cultural events if they were really interested in them. Instead all they do is talk about their life with 4 young children and how difficult it is to manage everything, what music they like and blah blah blah...
If they were really interested to promote intellectual events and good causes they would just do it!

Frederik and Mary simply stick to the people they already know and only hang out with them. They are not like Maxima and Willem-Alexander, Mette-Marit and Haakon or Felipe and Letizia all of whom appear to have very important circles of friends worldwide.