Bottom line: Its boring, its crowded, it is bad!
We go to Vegas a couple times of year and had always missed the TI show - so after we saw Love! over at the Mirage we made it a point to stick around and see it. It was a horrible, terrible waste of time. They cram the side walks with people an then the show begins and it is BAD. The dialogue was aimed at 6 year olds, but with lots of sexual innuendo - weird! I can't express how hot, crushing, dumb and blah this show is. Skip it - seriously.
If you must go on YouTube and watch a tourist video of it and you will see what you are NOT missing! Free or not your time can be spent on something much better!