Will need a friend who has already visited the scene. Have them go there. Set your multiplayer to open, and then teleport to your friend.
A group of us were summoned there the day before the awards event. Don't know who was actually summoned first, might have been me. I didn't see anyone but Shompers in scene at the time but then I got sent to my own instance really quick. Atos had offered to zone us to Atolls of Atos, an old but not open to us scene but then when he discovered it was set to devs only he got the OK from List to bring us to Castle Atos instead.
We just happened to be online when Atos popped into universal chat and asked if anyone wanted to see it. Was an open invitation to all who had that lucky timing.
Indeed! The entire zone is at a 1.5x speed modifier (I believe that's the multiplier he used) so everything in there will be going super-speed. Castings, attacking, running, drawing, etc. It will last until the instance is gone (as I understand it).