If I want to send few mBTC from my casino account to someone else who is using same casino, I would like to do it free and quicker if possible.
As far as I know, there is a
"tip" button on some of the casino I know specifically Roobet and Duelbits. I am not pretty sure though because I am away from keyboard but I clearly remember it having this function.
It's like an
off-chain transaction that costs no transaction fee between the same casino.