apple tv in Dominican Republic

The device itself will work pretty much worldwide. The Apple TV box is officially sold in República Dominicana, and would have regular feature support there.

Some streaming services may only work in the country where the service was contracted.

Some streaming services may have an adapted catalog for the new country (e.g. Netflix, Prime Video).

Apple services are intended for use in the ‘home country’ that matches the country as set for the Apple ID account. Some of these services may not work abroad, or in select countries.