Hi, we bought the gold twelve bottle package on our August Brilliance cruise. If you order and pay online before you go the gratuity is included in the price. We always buy as we get on board (they have the winelists for the 3 different levels available for you to look at) and the charge plus the 15% will be added to your Seapass account. The price is the same either way. When you choose your bottle in the Dining Room you will be given a receipt to sign, but it will show $0.
Be aware that the savings you make by buying the package can vary a lot depending on which wine you choose. Do some research on the RCCL website and you should get a good deal!!