Leaving a balance is ideal for a gambler but the problem here right now is what if the casino makes an immediately close even though we said that this is a small amount still consider its a money reason why not good if you keep your money into the casino even though its reputable.
Yes, as long as it's left in a trusted casino, though, make sure it's not too long because there seems to be a certain limit, I experienced an unpleasant incident when my money and account were frozen because it had been inactive for too long because I forgot to put money there, maybe around $ 50 if you calculate the current value, but it was my mistake to leave money there, even though the site is still active today.
I think don't leave money in the casino for too long, even if it's a little but it could be worth it in the future if it's in crypto, but if it's played again in the near future it won't be a problem always remember that there are funds left in the casino account so they don't get forgotten and in the end later you will lose money whether the casino closes or funds are frozen because the account has not been active for too long.