What is an instant payout bitcoin casino?

Could you elaborate on the concept of an instant payout Bitcoin casino? I'm curious to understand how it differs from traditional online casinos. Specifically, how does the instant payout functionality work? Does it mean players can withdraw their winnings immediately after a game? Also, are there any specific security measures implemented to ensure the safety of transactions? Furthermore, how does the casino handle fluctuations in bitcoin's value, and does it affect the player's payout? Lastly, are there any limitations or restrictions players should be aware of before choosing an instant payout bitcoin casino?