Don't expect anything as we have no idea about the intentions or motives of the casino owners, few years from now.
So to play safe, bet small if you really want to bet on some lines here.
For long running items, if you are not comfortable, then don't. You can't blame them anymore if they are gone.
But hopefully, the futuur team will be active here as they are offering unique betting platform, wherein, some players do like a change of gambling atmosphere.
This is not specifically about Futuur team, however putting all of your money into a casino and using them as a wallet would basically be the perfect method to lose all of your money very quickly to an ill intended place. I would trust exchanges more than I trust casinos and I do not keep my coins even in an exchange, I rather own a hardware wallet and put them there but even if you do not then non-custodial wallets would be even better than putting somewhere else. Remember "not your keys, not your coins".
However if you would like to gamble then the best method would be depositing after you lose what you have, put in 50 bucks, lose that, put another 50 bucks and keep repeating that instead of putting it all at once. This way you would be guaranteed that if anything happens then you would not have too much money in the casino at anytime.