If you are worried about sabotage because of the generation of the bitcoin addresses to deposit for the gamblers. If that will happen, a gambler can complain that they already deposited btc to that address and of course there's always an agreement between the casino and hosting providers, I don't think an employee will play dirty as what you are thinking.
A malicious hosting worker can change these bitcoin addresses.
For example your bitcoin address appears in your user panel. The hosting worker can change the site's source code. When you enter your own panel, you can see the btc addresses that the hosting worker puts on.
It can do this for all users. And everybody sends the wrong address btc.