Its ironic this place is called "Light", as there is a definite lack thereof inside. Like most clubs on the strip, it was packed and had a line snaking around the interior of Mandalay Bay. Use a VIP promoter to get in without any hassle, otherwise you're going to be in line for an hour or longer.
Once inside you'll notice its dark. Really dark. It kinda sucked IMO, id like to see with whom I am dancing. It looked pretty big on the inside, but it was so dark I couldn't even tell you how big it was. The soundsystem was good, the laser/strobe light system wasnt as great as some of the other clubs (like Hakkasan) but it fit the venue. The Cirque du Soleil performers were cool, and the music was definitely bumping. The bar line was a joke. Standard Vegas on-strip club pricing ($40 for a few drinks).
We did not stay long, but it just was not for us, I wont let that hurt its rating.