I watched in Opus when it just opened, about a week ago. It is very new, so there is not much around. Unfortunately, there was no popcorn included, even though you are watching in VIP at the time. So that's a bummer.
However, the theater itself is actually pretty good. It has a very clear screen, great projection, and great audio. The seats are great. Overall, it was a great experience. I hope it has been maintained since then, but at the time of viewing, it was one of the best VIP experiences