Bitcoin casinos can almost never be banned by countries. Since there are too many gambling sites accepting bitcoin ,its hard for governments to have knowledge of each, and since bitcoin is a grey area in many countries, its only considered as play money.
Some countries can definitely enforce a ban by the keyword method, instead of manually blocking all sites. Specially ISP's in the US could possibly bet the famous gambling sites of bitcoin.
The government here is regulating the online fiat sportsbooks and one can't gamble on them if they don't have a license but this doesn't pertain to bitcoin. You don't need to change any IP address or use a VPN service. Your access is filtered automatically through your ISP.
I would recommend changing your IP, as they might be monitoring your activity, and its best to avoid any trouble, if your country is not gambling friendly.