Just as a FYI to brides considering Bellagio for their wedding or a strip tour stop and also hiring outside photographers: Bellagio has recently banned any and all non-Cashman photography on their property, including apparently down by the water show, and they are now extra-strict on enforcing it. I found out when speaking to the guards a few months ago. Beforehand, they used to be lenient if you were getting married there, staying on the property, etc., and wanted to use your own photographer. It's different now.
Also, yesterday when I was walking in front of Bellagio, I watched two Bellagio security guards in red jackets patrol the entire length of the sidewalk in front of the water show. They stopped at a photographer about 50 feet away from me (I could tell she was a photographer by the softbox plus the bride and groom walking with her), and I am 99% sure the security asked the photographer to stop taking photos because they stopped and talked to them and the photographer left.
To my knowledge, you can still use your own photographer in privately-owned venues like restaurants, and I'm not sure about the convention ballrooms.
Normally I just PM resort security updates like this to Vegasgroom, but I haven't seen him post or reply to my messages in some time, so I thought I would post it directly here. This tightening of security against non-Cashman photographers may be limiting for you and your photographer, and if you have any opinions about it you can certainly let Bellagio know.