The sportsbook at the Wynn was fantastic the weekend i stayed there a few years ago. Watching the frozen 4, bases and playing horses every 2 minutes. $4 ex boxes and tri boxes and they handed out drink tickets like candy. Granted we were playing every race but had a stack of drink tickets to choke a horse, lots of places (esp. mandalay) are tight with drinks the last few years. If you're a degenerate that sits at the book all day until the last game is played this is the place. Great atmosphere, food and service.
Or you could grab a spot in the bleachers at the Vegas Club.