Sometimes it is a good idea to stand behind High Rollers when they are playing BJ.
Caesar's Palace 1992-ish? It's 3:00 AM and the wife and I are strolling through Caesar's. We see a cat playing BJ at a $100 - $10,000 table (not the HL room, just part of a regular pit). We stop- stand a few feet behind and watch the action.
Cat has a minimum of $100,000 in front of him. He's betting two/three circles- $1,000-3,000 per circle.
We are there for 3 - 5 minutes, not too long. He is winning in that brief time. He notices us. . . he turns. . . and casually asked, "Would you guys mind standing somewhere else?" As he asked the question he reached out to shake my hand. . . and handed me two $100 chips. I accepted the two blacks, said something like, "Absolutely my friend."
Off we strolled.