Thing is, it's not that wonderful - I dont' mean to sound like a hypocrite here as I do enjoy seeing pictures of Maxima's family, but here I think it's a case you could classify as harrassment. Media code or no media code, these people should be left alone when not on duty, period. Sure, if it's Maxima by herself on the beach, but she's with her two kids, enjoying a private moment. It's akin to stalking.
All the same, can't help but notice Maxima has a nanny in tow - she must also have one at home for Ariane, who wasn't on the beach. Two nannies working at once? Speak about privileged! The one on the beach, was that that necessary? Ah, I'm a bit old school on this one!