Rep is basically if someone thinks you do something good, they give you a rep and maybe you'll go up a green bar. If you do something bad, they might give you a red bar. /shrug just a way to show someone that you appreciate/don't appreciate what they've done. Some people mess around with rep bars =3 -cough-
As far as KQs etc. go, I'm fine. I don't play Fiesta to grind, I'm playing it for fun and to talk and do something in my spare time. I don't mind failing a KQ once in a while, and I don't mind being lower-leveled. I guess I play more casually than some people do, because I don't grind too much.
You can't blame all clerics for not rezzing. Maybe they have a good excuse.