I've worked for plenty of places that facilitate alcohol during work hours. For 99% of people that work there they enjoy a beer after lunch while they knock out some evening work or internal meetings, or just choose not to participate. Some people like to casually drink and while that isn't true of all individuals, depending on your team that might be a big morale boost for people that can drink responsibly in the workplace.

I was mostly referring to parties, though a liquid lunch during a (rare) slow week is not unheard of and can prove quite conducive to meetings.