I passed your questions on to the other organiers, Warwick. Thanks for bringing it up-- I feel it would help the event if we all better understood what garb standards we're shooting for.
In the meantime, here's what the Aratari handbook depicts as vet level garb:

It might be a worthwhile endeavor for us all to critically look at our garb and ask if we're meeting (preferably, exceeding!) the basic standards for garb listed in the Manual of Arms. Are we all in tunics of crotch-length or longer, acceptable pants, and shoes that make an attempt to blend in? Those standards met, are we striving to go beyond the basics and add to the event through our kits?
Of course, I'd be in raptures if everyone showed up in 'realist' garb, whatever that means for your persona!:

We'll see how the others chime in.