Perhaps the following comment should be in the LAS or "gambling forum":
If one wins a jackpot (anything over $1200) playing slot machines, a slot attendant and a security person (eventually) come to give you your cash; many gamblers will tip each of them, I personally do not. I would not hesitate tipping the slot attendant if he/she steered me to the machine I won on.
[Once I won an even $2000, I was given 19 $100, 4 $20's and 2 $10 not just 20 $100...]