On my first visit to the Grand Lux Cafe during a stay at the Venetian many years ago, we walked in expecting an entirely new experience. The ambiance and menu looked and felt strangely familiar until I saw the Carribean Skirt Steak, and instantly I figured the connection.
If Cheesecake Factory had an older sibling, GLC would be it. The menu items are different, but nevertheless it possesses the great quality of CF, and although the experience is not "entirely" new, it is an absolutely enjoyable variation... I love it.
GLC feels like it is a step higher than CF, or perhaps it's just the Venetian. So, if you like Cheesecake Factory, there is little doubt that you will love Grand Lux Cafe.