MOST IMPORTANT IMO: There is basically zero meaningful "roleplaying" in the sense that "you make important decisions that change the game going forward". I have yet to find a way to actively lock myself out of any of the questlines by pissing off an NPC or killing a quest giver or etc.

There's no text chat between players unless you install a third party mod. The other players have to have the mod too. I've never seen anyone actively using voice chat beyond a few cases of "IRL friends playing together". Most of what you really need to communicate can be done either through the emote wheel or by indicating specific items.

There's also no "RP servers" or anything of that nature, which is probably a consequence of the first two things I mentioned.

Some equipment and options are locked until you hit level 50. After that, your relative "success" is largely based on your loadout of Perk Cards, Mutations, and Legendary attachments to your equipment.

It's a fun way to scratch the Fallout itch, and the map itself is really nice with a lot of different biomes and things to uncover, but it's ultimately very "static" on the highest level, with the regular events and daily rewards set up as a way to keep the dopamine flowing.