Here's the scene: I'm out at a restaurant, and observe a husband, a wife, and two preteen daughters. The wife consumes two tall mixed drinks, followed by a large glass of red wine. The husband consumes three shorter heavy Spirit mixed drinks. Both consume their beverages in less than an hour. The husband finishes off his third mixed drink just before leaving. My concern is both of them are potentially intoxicated to some level. The wife especially appears to be intoxicated to some level. What is the protocol for dealing with such a situation?