As my handle hints toward. I have played several MMO's started with Everquest Online Adventures, I didn't care for it. Final Fantasy XI on the other hand I spent 5 years on the Remora server. I had some good times, but a lot of people do nitpick the smallest things.
I remember leveling DRK, getting to lvl 32 and getting kicked out of a party because I didn't have a Peacock Charm. Which anyone that has played that game knows that getting that charm was almost impossible.
I also cannot speak for the other servers but on Remora, if you were a US player in a JP party you kept your mouth shut and just done what was expected of your job. If it became known you were US they kicked you immediately. Regardless of how well you may have been performing, they believed no US player could play that game right.