Clearly, there is a lot of over-drinking. I mean by JW standards. By "normal worldly" standards, the drinking most JW's do would barely get a 2nd look. Most things in our society revolve around getting a drink.
After becoming and elder, I was shocked to learn how much hanky-panky went on -- even between Cong members. Friendships just often went "too far". It's the same kind of thing that happens to "worldly" couples who become overly "friendly". (Can you say Hot Tub Party?)
More recently, I am surprised by how many (usually fringe) JW's have a Medical MJ Card. Hard to believe they didn't occasionally cop a buzz even before it was "legal".