Final answer:
When a customer is already intoxicated, one more drink will increase their level of intoxication.
Step-by-step explanation:
When a customer is deemed intoxicated, one more drink will increase their level of intoxication.
The immediate effect of alcohol depends on the drinker's blood alcohol concentration (BAC). BAC can be different for each person depending on their age, sex, pre-existing health conditions, even if they drink the same amount of alcohol.