Worlds don't matter for anything but WvW, and F2Players can't do that until level 60 anyways. They can play with other players regardless. For PvP & PvE it doesnt matter what server you are on, it only makes a difference for WvW and you only have acces to it at lvl 60. short video that explains this really well.
For WvW, the world matters and there are two ways to play together: Join the same world; Join any of the worlds linked to the primary world. (Although this changes every two months.) Guilds are agnostic to region: all the benefits are shared; you just won't see your guildies in the GH if you're in different regions.
pPOh. c4p3xnz874.pages.dev/8c4p3xnz874.pages.dev/521c4p3xnz874.pages.dev/364c4p3xnz874.pages.dev/32c4p3xnz874.pages.dev/70c4p3xnz874.pages.dev/503c4p3xnz874.pages.dev/245c4p3xnz874.pages.dev/436
gw2 can you play with friends on different servers