Solace is open to anyone belonging to a recognized enthusiast organization, including CoasterBuzz Club among others. As far as the ACE only perks, I would surmise it has to do with the long standing relationship that Cedar Fair has with as that organization.
I beg to differ. When ever there is a need to fill seats for a media event or a film shoot, it's the ACE rep that gets the call. On the Discovery Channel shows that featured Knotts those were ACE members riding the coasters and getting drenched on Perilous Plunge. While there may or may not be a formal relationship, Cedar Fair has supported ACE and vice versa. I call that a relationship
No, there is no corporate-level ACE relationship because there are no common points between the parks in terms of the marketing, prior to the creation of a corporate marketing VP when they acquired Paramount Parks. Individual parks, sure, have various relationships, but it's not a company-wide phenomenon.
And I can tell you having sat on many of those media events and film shoots that ACE people as a percentage are low.
There is/was no such buyout. In fact, ALL Six Flags season passholders are allowed to participate for free (unless they happen to change that for this year). Buyouts are exclusive and specifically bar season passholders (as well as the single-day park-goer)
The event is sponsored and co-ordinated by Rideworld/TPR, but that's about it.
I've been going the past 3 years which is why I always renew my Magic Mountain season pass for $50 even though I live 3000+ miles away from the park :)