One of the more interesting pieces is buried in the linked PDF: "Excessive alcohol: Harassment is never acceptable and alcohol is never an excuse. But one of the most common factors among the harassment complaints made today at Google is that the perpetrator had been drinking (~20% of cases). Our policy is clear: Excessive consumption of alcohol is not permitted when you are at work, performing Google business, or at…
A couple drinks helps get me out of my own head enough to relax with co-workers. After a couple hours, the two beers have worn off and I usually want another one or two to keep my sociability going.
I'd much prefer a policy where everyone gets to decide in advance how many drink tickets they want and perhaps say "these tickets aren't good until X time." This would help everyone to regulate their own intake, and it treats employees like adults capable of managing their own bodies while still addressing the issue of people over-consuming by accident or in an unaccountable manner.