Since it's generally not illegal to talk about gambling, you're not really going to have problems with LE, in which case Njal.la, which literally proxy-registers the domain for you, is likely the way to go. It's basically a killswitch that never need to be activated.
If you are running an online casino and not just a forum, then you need to play jurisdictional arbitrage, and a lot of it, but cross that bridge when you come to it.