I'd recommend the Aria, Cosmo, or Planet Hollywood. These are generally "younger" hotels, meaning they generally attract a younger crowd. There's a couple nice bars in the Aria I've had luck in, too.
Knocking up someone else's wife is at the tippy top of my fantasy list. Unlikely it'll ever be realized, but I hold out hope lol until then I hope to read more about it happening
As a bull I stick with the bars because the guys always go to the topless pool lol it's the most obvious place after all. The bars have always worked out for me. The Aria is a good spot because it's a "young" casino. Same with the Cosmo. The Bellagio and The Palazzo are good, too.