Some plot holes (including the exit strategy)
Of course this is one of those "don't think about it too hard films"... you should just sit back and enjoy it.... and I do enjoy seeing each time it's on cable. However, there are a couple items that never add up, no matter how much suspension of disbelief I try:
1.) Livingston's work on the black jack machines: He says he's trying to rig the machines so that they give all the players 20 and 21, but the dealer busts. Reprogramming the machine won't impact that at all because it all depends on the what order the cards are in, which the machine can't manipulate.
2.) The 'Exit' strategy: The end plan is to get all the players out of the casino with all of their winnings (instead of having them keep playing and lose them right back). So, they have that fake earthquake to trigger an evacuation with all their chips. However, until those chips are cashed in, there is no money leaving the casino... and I'm quite certain the evacuation plan didn't call for all the players to cash in first and then run from a crumbling building.