I say.... let their be tutorial mode!
I was serious about that..... That 5-6 slide show in Emporia loading screen and the rules/info written on T-board is usually ignored.
A tutorial mode/demonstration. It basically is one of these for people who have the time:
Video mode: A video showing how Emporia War works. And a demonstration fight between 2 guilds (Maybe a video contest or AI battle).
Interactive mode: Warps you around the Emporia arenas, and allows you to look at what this is and learn the rules by doing without disrupting the tournament.
Make the tutorials accessable via the crest shop npc in PoW (but not the one in EW pre-fight) and allow them to view the videos at any time.