Yes the minimu is 7 per field, so 21 in total. In my server before cross server swb and before the merge we used to create alts for the only purpose of making it start. Anyways there was a guy talking about his server, 590, went this week in cross server arena so I'm pretty sure yours is too in the cross server circuit, unless you are in LA region and if I'm right then means your server wasn't added to the cross server version.