The short answer, at least based on my experience, is no. I have always kept track of all the planner prices, usually starting more than a year out, for upcoming cruises. For my 10/22 cruise, the 3 night dining package never went down, but did go up $30 this past April 2022. In looking at my past 10/21 cruise, going back to over a year on that one and again the price never went down, but similarly did go up $20 in April 2021. I already purchased the 3 night package for my upcoming 10/23 cruise anticipating that it will only go up. Again, if by some remote chance it goes down, I can always cancel and repurchase, but highly doubt that will actually happen.