One of my stores had a incident where a cart attendant was coming in recovering from a previous night of partying and binge drinking. The first time they told him to clock out and go home, and I was called in to take over. 2nd time, they told him if he ever came back in hungover or drunk, he would be immediately terminated. But he ended up being terminated for scratching a guests car bumper with a line of carts.
But I have heard some stories where ETLs were drinking in areas not covered by cameras. But the STL was unwilling to do approach the ETL because they didn't have proof they were drinking in the store and afraid to make accusation against them fearing a lawsuit. But they ended up finding other faults in the ETL in order to terminate them.