Of the two $(2)$ examples below, which is erratic drinking behaviour?

EXAMPLE $1$

You are working a quiet Wednesday behind the bar in the local sports club. You serve a woman a glass of red wine. Almost immediately she returns and asks for another red wine and orders a burger. You look at her table and see she is alone. You watch her go to the wine tasting table and try one $(1)$ sample. A short time later, she is back at the bar for a pack of chips. She is not showing signs of intoxication.

EXAMPLE $2$

You are working a quiet Wednesday behind the bar in the local sports club. You serve a woman a glass of red wine. Almost immediately she returns and asks for one $(1)$ shot of tequila. Five $(5)$ minutes later she returns and orders a beer. She quickly returns for a gin and tonic. You look at her table and see she is alone. You watch her go to the wine tasting table and return with multiple samples. A short time later, she is back at the bar asking for a triple$-$shot vodka and soda. She is not showing signs of intoxication.