On Thursday - Thanksgiving Day I arrived before my husband and noticed that there was a line at Hyperion just after park opening so I got in line. After about 10 minutes it was my turn and I opted for the 3pm show and chose my seats. They showed a seating chart of what was available - Upper orchestra or Mezzanine. I opted for upper orchestra and we were in the first row at the railing front and center. They will need to scan ONE park ticket or annual pass ( it's a test system so mobile ticket isn't valid). It will register on their end and you will be told to arrive 15 minutes before showtime. There is a specific entrance labeled "Priority seating" and you give your name and party size and they issue a paper ticket with your seat assignment which the usher will direct you to. I got tipped off it was testing that weekend when I saw it on my multiple Facebook groups.