Noticed the itinerary change last night for the Aug 20 cruise to Alaska and contacted Princess this morning and had them rebook cruise for Aug 21 on the Discovery. All itinerary is the same as what the Crown was originally. The perk is the Discovery is there newest ship so should be a great trip. Looks like a lot of people are changing to the Aug 21st cruise. Made two phone calls and was able to talk to someone who was a decision maker and could make the change without any additional charges. Of course I did need to change my flight and hotel accommodations but don't want to be stuck at sea on a broken ship.