Here's a little advice... act like you belong, and you're in.
I spent quite a bit of money during my Vegas visit, but Tom Ford is still out of my price range. Thankfully the store carries the entire line of fragrance, skincare, and beauty for those who are less flush with benjamins. While the service was somewhat intimidating when I walked in, the moment I displayed any sort of interest or knowledge with the brand was the moment my sales associate realized I meant business. From then on, it was smooth sailing. I gawked at gorgeous scarves, fanboyed over the very VERY popular sneakers (they come in size thirteen? oh lucky me), and admired the store's design before settling with my more frugal skincare and fragrance purchases. The moment I've got the $$$ to drop, i'll be back for those sneakers.