Hi kimbo,
We don't "worry" about any of the Rewards Programs. If we find an itinerary we like and a ship we like, we GO! If we get "something" for booking, all the better

.
There are certainly some advantages to re-booking on the same line, but we've found that we can
usually get the same lower prices from our TA.
I think you can
possibly find a comparable cruise on RCCL for about the same price, if you search for it and have a TA!
Just IMHO,