I am on the Sky Princess 14 day sailing Feb. 24, 2024 and the upgrade bidding minimums are really high! I have bid the minimum for an upgrade from interior to balcony on two prior sailings and have been successful on both. Each of those times it was around $150pp, a great deal!! I never checked back to see if those minimums had gone down as the sailing got closer, so can 't answer my own question. Maybe this particular sailing is really full and therefore they can up the minimum bids? BTW, the minimum bid is $515.00 right now.