Thank you BillB48! You are clearly very knowledgeable and this information really made my day! I know you cannot predict 100% but given your understanding of how the system works, your rationale makes complete sense, and it gives me a lot of confidence that we will be able to experience the original locks! Yay! By the way, your response is the most pertinent and comprehensive current information I’ve found on this topic (especially regarding Serenade OTS in particular), and I’ve done a fair amount of researching over the past week! Considering that a lot of people have similar questions, it’s odd that this wouldn’t be included somewhere on the Royal Caribbean website, but it isn’t, which makes your input that much more valuable! Thank you very much for taking the time to respond—I appreciate it so much!