Final answer:
The provided information does not directly answer the question regarding the difference in alcohol consumption between married and unmarried couples. Responsible alcohol consumption is defined as up to one drink per day for women and two for men. Higher divorce rates in professions like bartending do not establish a direct link to marital status and drinking habits.
Step-by-step explanation:
The question as to whether married couples tend to drink more alcohol than unmarried couples requires an analysis of various social studies and health researches. However, none of the provided references directly address the consumption of alcohol between married and unmarried couples, therefore an accurate comparison cannot be made from these sources. It should be noted that responsible alcohol consumption, as indicated, is up to one drink per day for women and up to two drinks per day for men. Furthermore, professional industries such as bartending have been linked with higher divorce rates, but this does not directly correlate to alcohol consumption by marital status.