I mentioned this in another post - whenever I hear about security/getting kicked out of places, it's annoying. I appreciate that the guards are obviously doing their job etc. There is a plug-in called HDRinstant for Lightroom that lets you create HDR images from video or burst images without your tripod (so you don't need to bracket). You would have just filmed the scene instead and extracted multiple photos (I think they used the technique in astrophotography too). May have worked for this example.
Very nice picture. I don't think it's too busy. Then again, I love Vegas, used to promote clubs, and enjoy electronic music. Looks like my type of place