Cruise Crystal replaces Turkey port calls on two cruises By Tom Stieghorst / January 15, 2016 Share 1 -- Crystal Cruises said it would substitute Greek ports for Turkish ones on two upcoming cruises "in response to ongoing security concerns for travel within Istanbul."Revised itineraries for the Crystal Symphony's April 24 and May 1 voyages will drop calls at Istanbul and Kusadasi. The April 24 voyage will substitute Souda Bay/Chania (Crete), Hydra, and overnights in Nafplio and Athens/Piraeus, while the May 1 cruise will include Patmos, Rhodes and an overnight in Athens/Piraeus.Crystal also said that pre-reserved Crystal Adventures in Turkey will automatically be canceled, while the line is in the process of developing new shore excursions.On Jan. 12, a suicide bomb killed 10 people in Istanbul, mostly German tourists. Before that incident occurred, Disney removed Greece and Turkey calls from a summer 2016 cruise. Last summer, after an attack on the U.S. consulate in Istanbul, Celebrity and Costa canceled calls in Turkey.