Your ship goes down in the middle of the Pacific Ocean due to poor maintenance combined with mechanical failure and navigatorial incompetence leading to sinkage during the night in a far beyond off the planned course path.
The event strands you on a smallish, livable but uninhabited Pacific island that is not on any map. you will never get rescued off the island or discovered.
You wash up on shore and find that you have a small salvageable shelter, and abundant food and freshwater sources for a balanced diet. the rest of your shipmates didn't make it. occasionally some supplies packaged in a crate wash up on shore like clothes or food or remnants of your old belongings.
you find one crate magically always has a drink in it. you can choose it to be a single, finite bottle of your favorite spirits or an eternally replenishing 1 pack of a single brand.
what do you drink?
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I don't drink, so i'd trade them all for a bottle of water.