We also started on Carnival then decided to try Royal Caribbean. Everyone's tastes are different.
Well if you want to continue with Carnival that is up to you of course, and you will get your perks, if not...
It is like that on all different cruise lines, you pick another cruise line and have to start from number 1. That's the way it is (at least on Carnival and Royal Caribbean anyway).
We will be taking the same cruise you are, but in November 2008.
Well all I can say is try it. If you don't like Royal Caribbean, then go back to Carnival. Or if the perks outweigh taking Royal Caribbean vs. Carnival, then take Carnival again.
Whichever cruise line you decide to go with, I'm sure you will have a great time!
Big Red Boat
Carnival Valour 2004
Carnival Jubilee 2005
RCCL Empress of the Seas 2006
RCCL Brilliance of the Seas 2007
RCCL Grandeur of the Seas 2007
RCCL Jewel of the Seas 2008
RCCL Explorer of the Seas 2008
RCCL Explorer of the Seas 2009