The Osborne lights is this HUGE display of Christmas lights that pretty much takes over New York Street and part of the back lot at MGM. Generally, depending on crowds, you can get through them in 30-60 minutes. Snow flies, of course there is Christmas music, and they give you these cool glasses that turn the lights into angels or snowflakes when you put them on. There is no extra charge.
Hadn't really thought about the lights as of yet, but maybe after the Fantasmic dessert party before the Karaoke meet......