Mzungu mchagga
aimless wanderer
in my opinion here is the must do list to be on top for italian teen/young:
Ibiza
Mykonos
Formentera
Loret de Mar
Riccione
Costa Smeralda
London
Amsterdam
Barcellona
Madrid
You've forgot Berlin...
But it's true, even though I see Italian tourists regularly, most young party tourists are from the English speaking countries, France, Skandinavia and Spanish/Portuguese speaking countries.