Nice, however I'd suggest taking it about 1/2 hour to an hour after sunset, when the sky is a deep blue, especially if there are any clouds in the sky. I like the light beam on The Luxor, but Excalibur is over exposed.
I like it a lot. At first it seems a little distracted, but they I realized what city you were in. The only thing I can think of would be more sky detail. Nice job.
I like it except for that fact that the building on the right are a little over exposed, and the pyramid is slightly under exposed.
Thanks for the replies everyone. I had a few other long exposures while I was there, but I had one of those mindless moments and deleted too many in the camera. This shot was the last chance I had before I flew out, so when I make it back down there I'll shoot for the dusk shot.