Perhaps we need a thread to discuss whether a casino should allow VPNs or not since the thread rarely touches the title or OP's intention of sharing VPN-friendly casinos or good VPNs for online casinos recently. Or OP can change the title to expand the discussion?
Good VPNs for access to casino sites and any other sites are primarily private VPNs on rented VPS. Meanwhile, using popular VPN services that provide users with free VPN can sometimes be quite risky, as you can get your account blocked. I mean, any casino wouldn't like the fact that some of its users would log in under the same IP address.
You quite make a whole lot of sense, but all the same, the best way to go about this is to avoid using VPN entirely. The gambles who who are not using any VPN are still being alleged of multiple accounts talkless of the person with the VPN. What you said is good and if it is a good VPN that you uniquely paid for the IP with a verifiable location and that no one will use it apart from you, it is fine. But still, in casinos even if you are not discovered as a customer with multiple accounts, they still have their means to try to detect it's a VPN and could be a serious issue.
For me, I would rather like to spend more money on the installation of a very good anti-virus with multiple protection purposes than risk using a VPN with casinos. This is especially risky if they clearly state in their terms and conditions that they forbid it. Is that not looking for trouble? Using my local IP anywhere I go in the world puts my mind at rest, and with anti-virus, I am secured pretty fine, which was what I was looking for with a VPN.