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Diet Pepsi (caffeine free) is my Pop/Soda of choice. I don't drink that much of it for the Fountain Fun Card to work out for me and they don't have it. So I take 3 or 4, 16oz bottles with me. The prices that Dave gave are current to the best of my knowledge. If you do buy one, make sure to do it on the first day of the cruise. They will have a deal that includes a discounted cup.