I was in one of the very first people in line the day HRRR first soft opened. The TM's told us not to form a line and go enjoy other attractions because it wasn't opening. That is what a soft opening is, an unannounced opening to test the attraction with guests. They don't want hordes of people, they want to give it a try with whoever is lucky enough to be there.
Needless to say, we waited at HRRR and within 90 minutes or so, they opened the wall and let us in, then saying " we will open it, but there is no guarantee you will ride it or it will run continuously."
Expect nothing less here.