As the pp said, as long as there is availability for the resort/room type you have booked, you can have the discount applied to your existing reservation. Sometimes you have to be flexible with your resort/room type as having a reservation already in place does not guarantee a discount can be applied. The pp is also correct that if you want to take the tickets off, you would have to cancel the package (get a refund) and rebook RO, which will require a new deposit. Since RO and packages are different reservation systems, money paid toward one cannot be applied to the other.