Anyone who booked a basic package for 2021 and calls to add your tickets on Wednesday, check and see if they also change your room-rate to 2021 rates!
CM also told me that any changes, including those adding tickets to "basic package" offered this year would have their rate changed to reflect 2021 prices because they didn't book at a guaranteed rate.
Only those who booked room only for 2021 and do NOT add or change anything about reservation will keep rate they booked at.
Now this CM seemed to be wrong about a lot of things so I don't think above is true, but just for you to be sure.