>Does the Role Playing consist mostly of the PK and a bit of interaction or such, things with multiple says, socials, etcetc

You're free to engage in whatever depths of roleplay, just be ready that not everyone will be willing to play along. Please understand that not all roles lend themselves to chatting or even explaining the reasons of one's actions. Also, some people just enjoy the competitive aspect or focus on exploration and so only do the bare minimum of RP.

That being said, there is still a lot of space for roleplaying, at least in comparison to every other mud I have known. I personally will be happy to have you around because I like to talk more than to PK and there are never too many people to do so.

tl;dr
Things that are valued in this mud:
Following your role > PK Quality > Verbal interaction > Everything else.