I guess being that I've had to soak up LV shopping for the past year I can share.
-Fornarina (actual flagship store) second one in the US, only other is in LA. in Mandalay Place
Stuff inside Cesars Palace forum shops
-Scoop NYC and Ted Baker, carrying many different designers
-Chrome Hearts jewelery
-Marc Jacobs, which is just about the tiniest store there
-Nanette Lepore
-Intermix, it's great seeing the clothes in person as opposed to online
www.intermixonline.com
plus this mall has about every single designer name anyway.
Fashion Show Mall across from Wynn, on the strip
-Zara, great staples
-Betsey Johnson
-Diesel
-Mango
-Talullah G, good for getting that mix of clothes too
The mall is huge and overcrowded with tourists all the time. So I tend to stay away. I pretty much stick to the thrift stores, scowering them for vintage designer things. Except it has all of these department stores
Bloomingdale's Dillard's Macy's Neiman Marcus Nordstrom Saks Fifth Avenue. You can literally be there all day.
There is a mall inside of the Aladdin, except it's a pretty run of the mill mall (Gap, express, steve madden etc) the only plus being that it has a Sephora and a Ben Sherman.
There are shopping areas inside of the Bellagio, Venetian, and Wynn also, but they are usually limited to jewelery stores, and mostly luxury designer labels (that are also inside the fashion show and forum shops), ie for window shopping.
The outlets are alright, I guess if you dont have an outlet anywhere by where you live. I only like checking out the Calvin Klein one really, and sometimes the French Connection one. There was a Burberry outlet for a short while, the D&G one is pretty off season, with not that many things to choose from.They are outdoors, and it gets incredibly hot in the summer. So not that great of a combination around July, August, September.