This is what you do, no kidding. You get ahold of the promotor of this event, it is right there on their website. You talk to them about doing one on the east coast. Possible? Maybe, who knows, you don't know of you don't ask. They may be thinking about others already.
Second, you contact promotors in your area and pass along the idea, they have maybe never even heard of such a thing.
Third, you do one yourself! I would put money on it the promotors of this show would give you tips (that is if they have no plans of spreading their wings and doing others around America).
But honestly, it is a super interesting event, mixing all these different hobbies into one place. Amazing idea (makes total sense, but they are the only ones that I know of to think of it) and pretty easy.