Perks are over rated in my opinion anyway. I was an avid CCL person and sailed on the Freedom for my first RCCL experience and loved it. Lots to do and see and the differences that ship offers over Carnival more than made up for my lost Carny Platinum perks. You will love it.
2008-Valor and Glory
2009-Spirit and Splendor
2010-Freedom of the Seas and Mariner of the Seas
2012-Allure of the Seas and Navigator of the Seas