Bad is to use VPN but the worst is to use VPN and at the same time trying to cheat the casino one way or the other it will lead to an immediate ban since you are already committing double offences, there is no doubt that some casinos may look away from the use of VPN even though is mentioned in their TOS that VPN usage is not allowed but then casino are looking for money after all because VPN usage has nothing to affect the casino unless for regulators who restrict the casino access in their jurisdiction.