Once again channelling my inner Derren...
As Mark says, I'd say it's been "reliable" in that there aren't many issues on a standard day-to-day operation of the ride. The issue is it's having major hurdles with stalling, the lift hill shredding itself and other issues. It seems like these are more design problems which need ironed out (this of course comes from someone with basically no engineering knowledge, mind).
As an attendee at the media night tonight, I *personally* don't care that Hyperia might be closed for the event. Whilst I'd like another night ride with minimal queue, I've already had multiple. But let's not pretend that it potentially being closed for the event is fine: it will be damaging for them to not have it open and get content of it running for FN from influencers.
But of course, more importantly, it needs to be running for paying guests asap. It's much more damaging being closed for them.
There's certainly a possibility it could open tonight. It depends how quickly they can remove the train. They will want to avoid closing Saw, or at least minimise its downtime, so that will play a part. If they can remove it by around now, they certainly could run it today.
However, if the park choose to run it tonight but then keep it closed tomorrow, that is a huge kick in the teeth and absolutely not on. I hope they don't go down that path.