I was at an engagement party of some in-laws over the weekend: people getting married in their mid-twenties. The alcohol selection was mimosas (low gravity champagne mixed with juice) as well as Coors Light, which few people drank. Nothing at 5% or greater and no red wine. The younger people were there and gone in about an hour. So what little was served wasn't anything that people could get a buzz from while many of the middle aged adults have started to abstain.