This is true.
Yet, merriness is also something to cherish with friends - which alcohol can abide. Yet, to drink to get drunk is problematic. To get drunk because you’re being merry, is a middle ground. Monks brew beer, nuns make wine, the Russians invented vodka, we Irish and English made whisk(e)y and mead, stout and lager. All good Christian civilizations have produced, or, carried on the spirit-making spirit of their predecessors. It serves a purpose. They unite us, bring us together, in good sense. Yet, like anything - excess is too much. We have the via media - the middle ground. The point at which your faculties because seriously inhibited, stop. To be always drunk all day and night is a grievous sin.
Trust in God and His Church. He has given us beer and whisky, wine and mead, vodka and gin, to partake of human love; not of human sin.
St Bridget wished to give God a lake full of beer!