That one's in the UK. They linked to the US one held in PA though, and apparently that's where the colored badge system came from. Both are over for this year, but are annual events. Maybe if I start learning about them now, I'd be ready to try one by the time they roll around again ...
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- NYGOI
NB: contents of above post represent my opinion at time of post only. YMMV, NAYY, and most importantly, IALBTC!