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GeorgeC1 said:
Every cruise ship I have been on is awash with alcohol. Is saving 20 bucks on a vacation that important?


$20 won't even buy two drinks. They are usually $10-12$ plus 18% gratuity. The ultimate beverage package is around $700 for a 7 day cruise, plus they charge an 18% gratuity on top of that. You are quite correct that the Ships have plenty, that is how they make their money.