Louboutin has a 3rd boutique, in the high-end Crystal Mall (across from Planet Hollywood). Make sure you visit them and the other 2 (Caesar's Palace plus Palazzo). I scored a J-string on sale at Caesar's, 40% off in early January. Sale has ended though. I stupidly didn't visit Palazzo and Crystal Mall. Palazzo had a Senora 130 at 40% off in my size..missed it!! In Jan/2015, I scored an Ostree at 40% at Loub/Palazzo.
Next to Loub Palazzo is Barneys, which carries Loubies. Around Dec/Jan, they have aggressive sales (40% off). I score some sale Pradas a few years back. The mall in adjoining Venetian has some NICE shops. Similar to that in Caesars.
The Fashion Mall (across from Palazzo), has Neiman Marcus
Nordstrom Saks. They all carry Louboutin. I got a Mea Culpa in Jan/2015 from NM, I found a helpful SA who I text often about styles.
Crystal Mall has some really high end shops, incl Jimmy Choo. Caesars also has a Jimmy Choo boutique. There is a great boutique Nannete Lepore, they have aggressive sale items. I'm friends with the manager there, I often buy stuff there in Jan time-frame.
Also across from Palazzo in Wynn, is a shoe-salon "Shoe In" .. they carry Louboutin and other designer styles. I scored some sale Loubies a few years ago
You can see Engineerinheels (she's here on PF) in Vegas:
https://www.instagram.com/engineeringinheels/
Palazzo Loub boutique, Bellagio, etc