hi .. ok well at any casino bar any hot girl is going to get hit on !  LOL .. but .. if you are looking for something nicer .. there is the lobby bar in the Wynn .but that one might be too upscale / monitored ..   a lot of the bars in the nicer casinos are now more a lounge .. you want a classic bar with a counter ..    MGM grand in the casino has one and tons of guys walking around and only across from the ParkMGM..   there is a round large bar in the ParkMGM itself  that might be fun.  

the NYNY i wouldnt go ..  more a family / lower budget casino.     Bellagio if i recall is now more a  lounge .. same with Venetian .. not that you cant get hit on in a lounge just tougher for a guy to approach.    there is a bar counter in the venetian casino area lounge .    

BUT  WARNING ..  if security thinks she is possibly a casino girl be prepared to defend yourself and be careful   dont let her get too carried away and start talking $$$ to a guy even if its a fantasy ...   security has dim view and you going oh its my wife might have little sway to keep from getting in trouble.