The main difference is that in KTV's you rent your own private room for karaoke whereas American karaoke is in ear monitors reviews front of a full bar of people, most of whom you don't know. I hadn't been to the American-style one for a while and it was definitely more intimidating than just a room of friends.
The most amazing thing about the Lady Gaga AMA performance was of course the artist's costumes. The backup in ear monitors shure were wearing something that could only be described as "indescribable", and she faced hermaphrodite rumors head-on by wearing a fake you-know-what in front of her lower area. I love it when stars play to the rumors and don't get offended by Hollywood trash talk!
A mix console operator never knows what he is getting. A mic change mid stream could suddenly increase your incoming signal pressure. Imagine a hose that someone doubled the water pressure coming in and ear monitors didn't give you a bigger hose it would burst. If the console was set for a weak mic that was sending 1.13V mean average and suddenly the new one is sending 1.68V mean average, you have increased the input 50% without turning a single knob. Since mic's send only what gets put in, moving the kick drum mic closer to the kick drum can change all the settings.
Besides the movie, the Blu-Ray/DVD also contains a number of special features. These include previews of other Disney movies, deleted scenes, a feedback music of the song "How To Believe" performed by Disney Channel's Bridgit Mendler, and a couple of activities: Design a Fairy House and Fairy Field Guide Builder.
We are all technology aficionados, or if not just practical people relying on technology to make our jobs easier. But I remember a line in a Rudyard Kipling poem: Machines are no more than children of our brains... But wow! What amazing children our brains have!