Surely I'm not from BK, but one difference I notice about R and SS is that R puts the "deals" out there in the beginning, whereas SS comes on with specials later.(At least I get a lot of emails from them on this)

At least that $200 "admin" fee that R charges can be forwarded to a FCC if you book another cruise. I have used that on a future cruise every time I have changed my mind.

Once the final payment is due, I'm sure all of the lux lines have a shift in inventory!