I never knew it was a "secret". Which is probably why they do not have it open til Hard Rock opens. Enough people probably know about it that if it was open when the park actually opens @ 9am the line there would probably be as long as one of the turnstiles at the regular entrance. If you go there enough times it doesn't take long to figure it out. It only took me a few times of going to Universal when we first got a pass when I was a teen to notice it.