0-4 is blue and red, 5-9 is gold and 10+ is platnium. I do not beliueve it counts towards any cruies other than CCL itself. The do count all cruises you have done as they have counted mine since 1996. You can go to thier website and check the cruises they have listed for you and update that list. It is often wrong when they first enter the cruises so you need to go and have it updated properly.
Reminds me, I need to update my wifes as they had her as gold and me platnium. She wanted to know what cruises I had been on without her
We have both been on 17 or 18