It will be interesting to see how they go about actually enforcing vaccinations. From what I have seen, they seem incapable of even enforcing proper government mandated mask wearing protocols. So if you can't even get someone to wear a mask, good luck getting them to inject an unwanted vaccination into their arm! (Disclaimer: I'm vaccinated).
Same with any company, you only get disciplined if you get caught out doing the wrong thing. Like speeding or any other civil offence, you have to be caught to be dealt with. That said if they require proof of vaccination and you forge that document, you will be terminated on the spot, I know the answer to that one, they could even refer it to authorities and charges could be laid.