I have played for a bit now but I'd like to join if room, get the ins and outs of why I am getting my butt kicked

I might be missing something but what difference is it to keep the tokens. Does it affect something? Why would you want to throw them away?

Is it proper to rate someone you had no real dealing with. For example, I get knocked out and never really fight someone but I see them moving but due to fog I can't see exactly what they are doing. Should I give a 4 because what I saw was very good but not 5 star or not rate at all?