When I go to Vegas with my friends as a group of kids most of whom are still freshly 21 years old, I love staying on the strip and wondering my way to the Cosmopolitan.
Now unformulated I have to do Vegas on a budget and I can not stay here. We have to stay at the cheep hotels and make the trek, but the track is almost always worth it. The casino is so cool inside, with great eats like secret pizza. The games are new, and the staff is friendly. Marquee the night club is a personal favorite (even tho I never feel stylish enough to get in) because everyone here seems to be young and fashionable. They really make the vibe that they want work.
Their drink service is absolutely my favorite. The portions are bigger, the pours are more generous, and everything tastes better. They do drinks right, and I am willing to play their games which do have a slightly higher minimum because their drink service is so good. It's really what keeps us coming back.