My wife and I were at the park at the end of March and discovered a bathroom pretty near Rancho del Zocolo -- it was a single room, and the door locks from the inside. It was right next to a cast member backstage entrance. Is that the "secret" bathroom?
I wonder -- is that the only place in Disneyland where you can actually lock yourself in (bathroom stalls don't count) and be inacccessible to the public? I sure can't think of any other place.
I tried using it later that day, but some people had locked themselves inside and were playing the kazoo. I am not making this up.