I have heard of a few breakdowns--seems normal for a new attraction. I haven't heard anything about the attraction being down for long periods of time, or heard about mobs of angry guests. It doesn't sound like it has low capacity, either, it seems to load and unload quickly.
So--is this just speculation and thinking out loud, or do you know people working there, or do you work there, and have knowledge of its operating time vs. downtime?
I had heard about unreliability of the arms as well--but they seem to be working well, at least until now I had not heard differently.