It depends on the length of the cruise and the package you choose. Sometimes they have discounts on the packages.
I believe it differs from ship to ship. On my cruise it was $65 per night (and you have to have it for every night) plus 18% gratuity. Also if there is another adult in your state room they have to have the alcohol package too.
Various prices depending on your habits and likes. Try going to their website
Prices are on the website and depends on your home currency as well.
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