@nate91 Costco was able to do an excellent change for me about a 2 months ago. It was for my June 14th cruise on Harmony. We originally had a GTY oceanview balcony for 4 of us. Me, my wife, and 2 teenage boys. I booked that last June. So 2 months ago, I saw that pricing was almost identical to get 2 rooms directly across the hall from each other.... And I could now pick my rooms. One was a oceanview large balcony and the other room was a central park view. The Costco agent was able to call Royal and make the switch for me.