Alcohol is a big part of cruising. Head on the ship and you'll find bars everywhere and drinks flowing. Of course, those drinks can add up quickly. For instance, a beer on a Royal Caribbean ship runs about $8, plus gratuity. A cocktail is usually $14. Have a few of those each day and you can easily be hit with an eye-raising bill for hundreds of dollars at the end of your cruise. That's where drink packages can help. The concept on the surface is simple. Pay one set daily rate and you can dri...
