Amazon Games detailes what we can expect from the first New World Aeternum Seasonal World, which will have always on PvP in the MMO.

New World players discuss whether the MMO's territory control system and its PvP Wars will end up being too exclusive in endgame.

Just add the friends using their Minecraft username. Then, invite them to your world. For the Java Edition, cross-play with the Bedrock is not officially supported.