Just like Las Vegas casinos, the service you get at MAC cosmetics (or ANY MAC stores in the city) is really a gamble and just pure luck. I have a love/hate relationship with MAC. Love their products but hate their judgmental associates and they test on animals!!!!!!! I've tried to replace MAC with another brand but I've yet to find one really comparable. But that's besides the point....
Maybe this company got some funky weird "rules" about customer service but you are literally invisible to them if all the associates are busy. I'm not expecting them to weigh on me hand and foot, but a "hello, welcome!" or "we'll be right with you" will suffice. Least you can do is acknowledge me.
If you don't look like a model, high classed prostitute or a nightlife industry girl.....you'll definitely be ignored. I never come to MAC to browse and see what new products are in stock. I usually know what I want/need to buy. Just give me my products, process my transaction correctly and smoothly and I'll leave you snobs alone. The Caesars Palace location is worse. But the Miracle Mile Shops associates were nice enough to welcome me in.