Just off a B2B on Island. Wanted to trade alcohol for Michelob Ultra. Room Steward checked and was told it couldn’t be exchanged because Mich Ultra is a Premium Beer. It costs $.50 more! We could exchange for Budweiser products. Didn’t push the issue. When we met the F&B Officer at our Meet & Greet on our 2nd cruise, I brought it up with him. He agreed that Corp had changed some of the parameters on what could be exchanged and we both admitted it was petty (my word, not his), disallowing an exchange that would cost Princess $4.00 per cruise! He then excused himself and called Room Service to make the exchange for Mich Ultra. Kudos to him, but I should not have had to get him involved.