By Daniel Kline Before you board a Royal Caribbean cruise, you should know everything about how the cruise lines drink package works. For many cruise passengers, a cruise would not be complete without consuming a few (or more than a few adult beverages). Cruise ships have bars pretty much everywhere and whether you’re at dinner, a show, the pool, or even the spa, the beverage of your choice is never far away. On a Royal Caribbean International (RCL) – Get Royal Caribbean Group Report Cruise (much like cruises on rivals Carnival Cruise Line (CCL) – Get Carnival Corporation Report and Norwegian …