from their website
Whether you're a wine enthusiast or just looking to reserve some of your favorites for a special occasion, pre-reserving is a convenient way to select your wine before you begin your cruise vacation. Plus, with our Diamond, Platinum, or Gold Wine Packages, you can purchase wines from our special selection and save up to 25% off regular list prices.
Basically you prepay for one of 3 wine packages.....and then you can order a bottle at dinner to enjoy in the dining room or Windjammer........and if you dont finish that bottle,you can re cork it and enjoy the next night or even take it back to your cabin........
You can order it on board or pre order .....
heres a sample menu
[FONT=Arial, Helvetica, sans-serif]http://media.royalcaribbean.com/content/en_US/pdf/SampleWineMenu.pdf[/FONT]