What is a common behavior of guests who haven’t eaten since lunch?

A common behavior of guests who haven’t eaten since lunch is that they are likely to have a higher tolerance for alcohol, as the lack of food can lead to quicker absorption of alcohol into the bloodstream. When guests haven't eaten, the absence of food in their stomach means that alcohol will affect them more rapidly, as there is no food to slow down the absorption process.

While high tolerance typically refers to individuals who can drink larger quantities of alcohol without feeling the effects, it is important to note that individuals who have not eaten may experience the effects of alcohol more strongly, leading to intoxication that they might not be able to handle if they had been consuming food at the same time.

In consideration of the other options, guests who haven't eaten often might not order drinks slowly since they could be quicker to indulge. They may not request food frequently either, depending on their intentions; some might prioritize drinking over eating. Lastly, drinking water between cocktails is a behavior typically associated with responsible drinking, rather than a direct consequence of not having eaten.