exhibisionisim!!!, for God Sake, Prince Felipe and Princess Letizia have NEVER kissed (in the mouth) in a public event, they have never been shoted caring and touching and kissin either, but Princes of Orange and Prince Frederik and Mary did, Princess of Asturias just hold hands and that is what you call exhibisionisim, come on, this is just out of proporcion.
I think they are very in love, and they don't care about what people thinks and that is very nice.
About Princess solo acts, I don't know why people doesn't count her engaggement with prince Felipe, it means that she is nothing when prince felipe goes to a event with her, her presence is not important????
She has made more activities than any other Princess, with or without Felipe.
She is the most hard working Princess, just count the events that she has made this year and compare them with the other Princesses, then you would realise about that.