You'd be surprised at the crazy crap these astronauts brought with them. In those days, they actually piloted the rockets. No computers sophisticated enough to truly automate stuff. As pilots, they were actually in charge of large parts of the mission, and their lives...so they each had a personal preference kit that didn't add significant weight, or endanger the craft. Beer, being a carbonated liquid, would not have been brought on the actual moon flight. However, Aldrin brought a tiny bottle of wine to use to take Communion on the surface, where there was enough gravity to drink from a chalice. https://www.guideposts.org/better-living/life-advice/finding-life-purpose/guideposts-classics-when-buzz-aldrin-took-communion-on-the-moon