We are on that cruise too. I have noticed that it "disappeared" from the website a couple of times previously. I assumed that it was sold out and then it would reappear! I last looked at it yesterday and prices have not dropped. Enjoy your cruise!
Which cruise were you on? We are booked for the May 15, 2024 cruise of Japan. I haven't been called and all the Japan cruises are still showing as available to book.