Good luck with that. I've been getting the error about not being able to load the JP server list just as often as the NA/EU list. I have a feeling there are a lot of NA/EU players on the JP servers that aren't taking their character seriously because it's just a temporary place for them to play until the NA/EU server issues are resolved. It's not necessarily true that the JP players get better service, you have to keep in mind the time difference. During the week there is very little overlap of JP and NA play time, so when our servers are slammed, theirs are relatively empty. But on the weekends there is much more overlap and all the servers get slammed.

My advice: about 2 minutes before the top of the hour start trying to get in, and repeat every 30 minutes. I played all day yesterday and we noticed people were able to log in in waves, and it seemed like it was always on the hour and half hour, almost like the servers were only allowing people to log in for 5 minutes, then went back to giving the "World is full" error, regardless of the state of the server.