Although not many casinos have instant credit, in the end, the deposit that we make will go into our account and we can use it whenever we want.
But I think it makes sense for the casino to lend us the money first because our deposit hasn't been confirmed from the network and maybe it's one way to provide convenience to users.
Well, it is important to note that every casino that has instant credit gets many players out of trouble when their money runs out, but it is usually a double-edged sword when they get carried away by emotion and it is abused, I understand perfectly why what casinos take into account the confidence points of each player, and if each player is active and has the ability to pay.
Instant credits sometimes if they are made through fiat money accounts I don't know how fast they are on the network, but I think that if that option is taken it could speed it up through other means, such as USDT so that the waiting time does not be a lot.