OMG this place is HUGE!!!
Never stayed at the MGM Grand (I always stay at the Mandalay Bay) but it is definitely close enough to where I can take a tram to the Excalibur and walk over to play a little 2/4 limit holdem, a game they have scheduled regulary which is cool. The MGM also has the last Sigma Derby in Las Vegas, which may seem cool, but the sound is really obnoxious, and you can hear it from everywhere in the casino. If you were wondering what that loud farting noise was, it is actually a simulation of horses running. It is actually really funny to see all these people gathered around this old machine betting quarters and shaking their cups of change and yelling at the small plastic horses.
I mainly come here for the 2/4 limit game. The poker room is situated right by the lion sanctuary and is nice- but not as nice as the one inside The Mirage. If you want to come here to play no-nonsense poker this is a good place. The games are always going off consistently and there isn't much of a wait. Plus the swanky computerized wait list with the names is pretty cool. Lots of TVs, very good drink service, and you can also get food brought to you too. I'm sure everybody at your table will be thrilled when you order a huge plate of onion rings.