I've been finding conflicting info on this, so figured I would ask here: We have Power Passes (the first level up from just the standard Season Pass), and I know the Season Passes are blacked out for concert days, but there isn't a clear answer on the Power Pass restrictions on these days.
We will be at Universal for two days total (Friday the 11th, and Saturday the 12th), and while we don't really care about the concert, we had been planning our Studios day for Saturday anyway. The Power Pass blackout calendar doesn't show either date as restricted, but I saw somewhere that Power Passes can only get in after 5pm?