For what it's worth, ACE held an event (ERScream!) at KI last October. It seemed well-attended, but the weather was poor. At dinner in the picnic grove, park manager Tony Carovillano announced the park would be closing early. This was a bummer and meant no haunt attractions, but was understandable due to the weather. Overall it was a good event with a slightly disappointing ending.
I was looking forward to KingsCon as a follow-up event, especially with the uncertainty about Coasterstock this year. If they do have Coasterstock, I wonder what the price will be.