MGM is definately a favorite. Have been upgraded numerous times to "nice" rooms. Their rooms are very comfortable but a little dated. i understand they are getting ready for a renovation. The skyloft rooms are great if you are looking for a treat.
Their dealers are sometimes a little stoic but i have won there more than lost so really not an issue. cocktails do not seem to be a problem and i think they have the last remaining mechanical horse race game in the world. imagine 10 people (all seats filled) betting on little plastic horses clumping a round a little track yelling so loud people from the craps tables come over to see what all the fun is. hard to discribe.