Andrew was in about the safest place it was possible to be for a British serviceman in the South Atlantic, and was most definitely not placed 'in harm's way'. To the point where, as he once told a close friend of mine, he was bored witless and frustrated. A competent pilot and a man of some personal courage, he was keen to play a more active part, but both his designated role and the worries of his superiors precluded that. The Queen's son he may have been, but he was not able to pull rank or effect a transfer.
As for Harry in Iraq - at least he'll be in an armoured vehicle and not exposed to the same risk of roadside bombs as the poor sods in soft-skinned Landies. For all the lad's enthusiasm, though, I imagine there are senior officers now wishing to God that he'd chosen to be a shelf-stacker at Tesco as they struggle to square the circle of an operational deployment and the need for personal security with the fact of who he is and the worldwide interest in him.
(And no, he ain't Hewitt's son. Plenty of gingers among the Spencers - look at his grandpa).