It seemed like it was open all days last week (May 9-15) and for a lot of each day. We rode it a handful of times with waits ranging from 30 to 60 minutes (vs. posted waits of 45 to 70). You know its open when the app gives you a wait time. The app flashed "ride now" on Friday morning, but the wait time was at least 45 to 70 at that point.
Yet it wasn't without issue. Besides halting for weather at least once, it abruptly shut down Friday afternoon with a 75 minute queue waiting and we bailed. Don't know if they restarted it again that day.
As far as logistics: No express pass, but they were running the single rider line as well as a "front" line. Right at loading, you had the option of instead of boarding moving to the "front" line to wait for a turn at riding in the front. That queue had usually around 6 to 8 pairs in it. I don't know if they cut off that line if it gets too full, as we did not partake of it. I know that at least twice last week they declared the single rider line "full" until it flushed out some.