This sounds like a blast! Where do you guys host these events?
Axiom hosts these events in the Dwight area. In 2010 for the 30th, it was at the factory and the after party was at Ian's house. In 2015 for the 35th it was at a local resort - the Lumina - and factory tours. Bryston owner James Tanner was present for this one.
I would bet Axiom would be gearing up in 2019 for the 40th in 2020. You can search the forum for these events and members individual visits/tours - including mine from 1991.