They may disburse larger winnings either as a lump sum or as an annuity. Some casinos won't allow you to choose how to receive winnings. If you receive an annuity, you can convert it to a lump sum by selling it  but you won't receive the full value of your winnings.

Danny Ocean says, The Nevada Gaming Commission stipulates that a casino must hold in reserve enough cash to cover every chip in play on its floor. That means on a weekday, by law, it has to carry anywhere betweenR$60 andR$70 million in cash and coin. On the weekend, between 80 and 90 million.