[Drew68]

Of course, this is unusual because alcohol is not only free but encouraged for gamblers at Paddock's level.

Paddock viewed gambling as his occupation. It's not unusual to not drink at work.

[Kirkwood]

Exactly.

[RoosterRedux]

Paddock would sometimes stay at the casinos for months at a time. He apparently didn’t even imbibe when he was off work (at least not at Wynn’s casinos).