Tequila is indeed the devil's beverage of choice.
I think you're, perhaps wilfully, missing the point. The jamboree is all about extravagance, opulence, conspicuous consumption and waste. Overdoing it, over-indulging with a guilt-free, fat *******-style frilliness.
Not because it's right or anything, or because anybody actually likes it, but simply as a way of demonstrating, saying we *can*, aren't we terrific!