Wonderful pictures indeed, the family looks great together out in the sun! Mette-Marit looks almost as tanned as Princess Madeleine of Sweden usually is, and since M-M doesnt' have any Brazilian roots/blood in her (Madeleine gets a tan very fast because of it), I guess her skin is even more sensitive, it's of the Scandinavian quite "pale" type.
I wonder though, since Haakon has always celebrated his birthday in private, could this session for some press today be a result of those "jealousy" articles in Norway some time ago - saying that the Norwegians also wanted an official and public birthday celebration for their heir, just as we have in Sweden (for Victoria)? Not that this was anything like the Victoria Day, but at least he shows his face on his birthday, so I was just thinking maybe there's some small connection.